Best Selling Products

Chillout Systems Neoprene Air Ducting Chillout Systems Neoprene 3" Air Duct Hose is used to direct cooling air into a Chillout Systems cooler or take the coolers heated exhaust air and exit outside of the interior compartment. Flexible, pliable and structurally strong thanks to a coated spring-steel wire support helix that prevents it from collapsing the fiberglass fabric cover and fiberglass cord are both impregnated and coated with neoprene rubber. DETAILS Manufacturer: Chillout Systems Manufacturer part number 6 Foot: CH-ADH3-6 Manufacturer part number 12 Foot: CH-ADH3-12 Inside diameter: 3 inches Temperature range: -45° F to 330° F With a temperature range between -45º F to 330º F, this makes it ideal for most applications, most importantly bringing fresh/cool air to your Quantum Cooler. Also perfect for cockpit cooling and other low-pressure ducting applications where extreme heat can't be avoided. Under-hood applications such as connecting an air intake to an air box, or an air box to a throttle body are also great uses.

Longacre AccuTech Digital Pyrometer The Longacre AccuTech 52-50635 digital pyrometer measures and records tire temperatures that are critical for dialing-in your track car. From autocross to the 24 Hours of Daytona, Longacre tire pyrometers are the standard -- fast, accurate, reliable, and they fit in the palm of your hand. The Longacre Economy Digital Pyrometer can record the highest temperature of any pyrometers we've used, with a temperature range up to 1400º F. It can be switched to your choice of Fahrenheit or Celsius readout. LONGACRE ACCUTECH PYROMETER DETAILS: Manufacturer: Longacre Manufacturer part number: 52-50635 Accurate, fast response Straight cord tire probe 1400º F range (with proper probe) Switch between Fahrenheit and Celsius

Red Line 5W30 Full Synthetic Motor Oil Red Line engine and transmission lubricants have long been the choice of racers and knowledgeable engine builders. Red Line is best motor oil choice for high-performance street engines that see street/strip or track activity. Redline 5W30 Motor Oil is popular for medium and heavy-duty gasoline engines in passenger cars and light trucks. The thermal stability, film strength and reduced parasitic drag found in Red Line engine oil all contribute to lower operating temperatures, increased engine life and more power. Red Line's racing heritage is reflected in all of their products...you’ll see more Red Line products at the track than any other lubricant manufacturer for all of these reasons. Red Line 5W30 Motor Oil Details: Manufacturer: Red Line Oil Manufacturer part number: 15304 Viscosity: 5W30 Size: Quart Fully-synthetic ester formula for passenger cars, light trucks, performance vehicles and marine applications. Excellent wear protection and friction reduction across a wide range of operating conditions. High detergency allows extended drain intervals and provides increased cleanliness. Improved fuel economy and ring seal for more power. Superior high temperature stability and oxidation resistance increases lubrication of hot metal compared to other synthetics. High natural viscosity index provides thicker oil film on bearings and cams. Lower evaporation than other synthetics for improved efficiency and ring seal. Completely compatible with other conventional and synthetic motor oils. Specified for most late-model BMW, General Motors, and Nissan vehicles. Suitable for VW/Audi 500.00, 501.01 and 502.00; BMW LL-01; and Ford WSS-M2C946-A. Thicker oil film at operating temperature than a petroleum 10W40 Recommended for API SN/SM/SL/SJ/SH/SG/CF and ACEA A3/B3/B4; GM Dexos 1 (GM-LL-A-025, GM6094M and GM4718M); and BMW LL-01.

Stilo ST5 Helmet Hydration Kit Connectors Male and female Stilo hydration kit quick-connectors priced individually to help you customize your drink-it installation to your needs.

Stilo Crown Pads Replacement crown pads for Stilo ST5 helmets help you customize your helmet to provide the perfect fit!

Alpinestars Tech-1 KX v3 Karting Shoes The Alpinestars Tech-1 KX v3 Karting Shoes combine Formula 1-inspired construction, lightweight comfort, and precise pedal sensitivity for competitive kart racing. Their anatomically profiled design provides a close, supportive fit while reducing unnecessary bulk around the foot. An advanced seamless thermo-welded upper uses an ultra-thin polyurethane film over breathable 3D mesh. This construction reduces conventional seams and potential pressure points while improving flexibility, ventilation, and long-session comfort. The revised asymmetric closure system combines adjustable support with Alpinestars’ wire-tightening technology. Drivers can fine-tune the fit across the foot for dependable stability during hard braking, rapid throttle transitions, and demanding race conditions. Seamless Thermo-Welded Construction The Tech-1 KX v3 uses an advanced thermo-welded upper that reduces bulky stitched seams. An ultra-thin protective film reinforces the structure while allowing the shoe to remain lightweight and flexible. The streamlined construction helps minimize pressure points and creates a smooth, close-fitting profile suitable for tightly spaced kart pedals. Breathable 3D Mesh Upper Breathable 3D mesh promotes airflow around the foot, helping reduce heat buildup during long races, practice sessions, and warm-weather karting events. Laser-cut ventilation openings and perforated sections further improve air circulation without compromising the shoe’s supportive structure. Revised Asymmetric Closure System The asymmetric closure follows the natural shape of the foot for a secure and personalized fit. Adjustable straps work with Alpinestars’ wire closure system to distribute tension evenly across the upper. This design helps reduce unwanted foot movement while eliminating the bulk of a traditional centered lacing system. External Heel and Ankle Support Reinforcement around the heel and ankle provides additional stability during hard braking and aggressive pedal transitions. The supportive structure helps keep the rear of the foot securely positioned without restricting normal ankle movement. Internal Toe Reinforcement An internal reinforced toe area provides protection against impacts and repeated contact with the kart, pedals, and chassis components. Superlight Tongue and Padded Collar A lightweight tongue reduces material across the top of the foot, while soft collar padding improves comfort around the ankle. The microfiber collar helps reduce irritation during extended wear. Thin Performance Outsole The exclusive lightweight rubber outsole is designed to maximize pedal sensitivity. Its thin profile allows drivers to feel subtle changes in brake pressure and throttle position for more precise control. The specialized compound also provides dependable grip on kart pedals and trackside surfaces. Alpinestars Tech-1 KX v3 Karting Shoe Features Advanced Formula 1-inspired karting shoe construction Seamless thermo-welded upper Ultra-thin polyurethane reinforcement film Breathable 3D mesh panels Laser-cut ventilation openings Anatomically profiled performance fit Revised asymmetric closure system Alpinestars wire-tightening closure Adjustable support straps External heel reinforcement Supportive ankle construction Internal reinforced toe area Superlight tongue Soft microfiber ankle collar Comfortable collar padding Lightweight rubber outsole Thin sole profile for precise pedal feel Designed for competitive indoor and outdoor karting Technical Specifications Product: Alpinestars Tech-1 KX v3 Karting Shoes Manufacturer: Alpinestars Product Type: Kart racing shoes Upper Construction: Seamless thermo-welded structure Upper Materials: Ultra-thin polyurethane film and breathable 3D mesh Ventilation: Laser-cut openings and perforated panels Closure: Asymmetric adjustable strap and wire system Heel Protection: External reinforced heel structure Ankle Protection: Supportive external reinforcement Toe Protection: Internal reinforced toe area Collar: Soft microfiber with lightweight padding Outsole: Thin lightweight rubber karting sole Alpinestars Tech-1 KX v3 Karting Shoe Size Chart Frequently Asked Questions What type of racing are the Alpinestars Tech-1 KX v3 shoes designed for? The Tech-1 KX v3 is designed specifically for kart racing, including competitive indoor and outdoor karting. How does the wire closure system work? The wire system evenly tightens the shoe around the foot, allowing fast and precise fit adjustments without relying entirely on traditional laces. Are the Alpinestars Tech-1 KX v3 shoes breathable? Yes. The upper combines 3D mesh, perforated sections, and laser-cut ventilation openings to promote airflow around the foot. Do the Tech-1 KX v3 shoes provide good pedal feel? Yes. The thin lightweight rubber outsole is designed to provide direct feedback through the brake and throttle pedals. What is the benefit of the seamless upper? The thermo-welded construction reduces bulky stitched seams and potential pressure points while maintaining support, flexibility, and durability. Do the shoes provide heel and ankle support? Yes. Reinforced heel and ankle areas help stabilize the foot during hard braking and rapid pedal transitions. Are these shoes comfortable for long karting sessions? Yes. The breathable upper, padded collar, lightweight tongue, and anatomically shaped construction are designed to reduce heat and pressure during extended sessions. Can the Tech-1 KX v3 be used for indoor karting? Yes. The breathable construction, secure fit, and responsive sole make it suitable for indoor kart racing and league competition. Can these shoes be used for auto racing? The Tech-1 KX v3 is designed for karting. Drivers competing in auto racing should use fire-resistant footwear approved to the standard required by their racing organization. How should the Alpinestars Tech-1 KX v3 fit? The shoes should fit snugly around the heel and midfoot without painful pressure points. The toes should have a small amount of room while wearing the socks normally used for racing. How should the Tech-1 KX v3 Karting Shoes be cleaned? Clean the exterior with a soft damp cloth and mild soap, then allow the shoes to air dry naturally. Do not machine wash, submerge them in water, or expose them to direct heat. Lightweight Karting Performance and Precise Control The Alpinestars Tech-1 KX v3 Karting Shoes combine breathable seamless construction, a secure wire closure, reinforced protection, and a thin performance outsole. Their lightweight design and close anatomical fit make them an excellent choice for kart racers seeking comfort, stability, and accurate pedal feedback.

Keep Your Stilo Helmet Ventilated With The Stilo Top Air Kit For Maglock Systems Fresh air keeps you cool and keeps sweat from getting in your eyes as you take the checkered flag. Endurance racers keep their focus high and lap times low by staying in the cool zone. This Top Air is designed to be used with a Maglock System. This unique cooling system feeds air from your car’s fresh air system to both the top of your head and to the front of your face, while at the same time helping keep the inside of your visor clear. This system integrates into the existing design of the ST5 & ST6 helmet and does not require any drilling of the shell or modifications to the internal EPS foam. There are six small ventilation holes molded into the top of every ST5 and ST6 helmet. Stilo's Top Air system fits over the center four holes and extends down the front of the helmet and just under the top of the visor. Air fed into the Top Air is directed both to the top of the head and down over the face. A small deflector just inside the visor area directs air towards the visor and away from the eyes. Old air flows out of the top side holes on the top of the helmet and from the bottom of the helmet, significantly reducing CO2 buildup in the helmet. Stilo's Top Air System can be fitted to all Stilo ST5 or ST6 model helmets. It comes in two sizes to best fit your helmet: SKU YA0893-S Non-Adjustable for helmets XS 54cm to L 59cm SKU YA0894-S Non-Adjustable for helmets L+ 60cm to 4XL 64cm      

VP Racing Utility Jug Replacement Big Cap Replacement big cap for a VP Racing Motorsports Utility Jug. Complete cap assembly features an O-Ring seal for leak-free racing fuel transport and filling. Red center plug can be removed to attach a VP Racing Utility Jug Filler Hose for no-leak refueling. VP RACING REPLACEMENT FUEL JUG CAP DETAILS Manufacturer: VP Racing Manufacturer part no.: 3042 Color: Black Seal type: O-Ring Removable center cap Fits all modern VP Race Jugs

Stand21 Porsche Motorsport Racing Gloves The Stand21 Porsche Motorsport Racing Gloves combine premium driver protection, exceptional comfort, and officially licensed Porsche Motorsport styling. Designed for demanding auto-racing environments, these FIA-approved gloves deliver precise steering-wheel feel while helping reduce pressure points, vibration, and hand fatigue during long stints. External stitching keeps bulky seams away from the inside of the fingers and palms, creating a smoother, more comfortable fit. Silicone grip zones and ergonomically positioned anti-vibration padding provide the control and support needed for endurance racing, sprint competition, track days, and other high-performance driving applications. Officially Licensed Porsche Motorsport Gear These premium Stand21 racing gloves feature the officially licensed Porsche Motorsport logo, making them an ideal choice for Porsche owners, racers, instructors, and enthusiasts who want authentic motorsport apparel with professional-grade protection. The distinctive Porsche Motorsport branding is combined with Stand21's proven racing-glove construction, creating a glove that looks appropriate in the paddock while delivering the performance required inside the cockpit. External-Seam Construction for Improved Comfort The Stand21 Porsche Motorsport Gloves use externally stitched seams to move seam bulk away from the fingers and palms. This construction helps eliminate uncomfortable pressure points and creates a smoother interior feel when gripping the steering wheel. External seams also improve dexterity and steering feedback by allowing the glove to conform more naturally to the driver's hand. The result is excellent comfort and control during extended driving sessions. Silicone Grip and Anti-Vibration Protection Silicone grip zones across the palms and fingers help provide a secure connection with the steering wheel. The strategically positioned grip pattern improves control without requiring excessive hand pressure, which can help reduce fatigue over the course of a race. Pre-formed palm protection and ergonomically optimized anti-vibration pads help distribute pressure across the hand. This design can reduce discomfort, friction, and blister formation during long stints or high-vibration driving conditions. Premium Aramid Construction Stand21 constructs these gloves from premium aramid fabric and leather, with aramid thread used throughout the stitching. The combination provides the heat resistance, durability, and flexibility required for competitive motorsport. Knitted aramid fourchettes between the fingers improve mobility and ventilation while maintaining a close, performance-focused fit. The materials and construction are designed to balance protection with precise control of steering-wheel buttons, paddles, switches, and other cockpit controls. FIA-Certified Racing Protection The Stand21 Porsche Motorsport Racing Gloves are homologated to the FIA 8856-2018 standard. This certification makes them suitable for many professional, club, endurance, road-racing, and international motorsport applications requiring FIA-approved driver equipment. Drivers should always confirm the required safety certification with their sanctioning body or racing organization before competition. Stand21 Porsche Motorsport Glove Features Manufactured by Stand21 Officially licensed Porsche Motorsport product FIA 8856-2018 homologated External-seam construction reduces interior pressure points Silicone palm and finger grip zones Ergonomically optimized anti-vibration padding Pre-formed palm and protective pads help reduce blisters Knitted aramid fourchettes for flexibility and comfort Premium aramid fabric and leather construction Sewn with durable aramid thread Designed for precise steering-wheel feel and control Available in sizes Small (8) through 2XL (12) Ideal for Porsche Racing and Track-Day Drivers These gloves are an excellent option for Porsche racers and enthusiasts who need FIA-approved protection with premium comfort and authentic Porsche Motorsport branding. Their external seams, silicone grip, and anti-vibration palm protection make them especially well suited for endurance racing, road racing, driver instruction, time trials, and performance track driving. Why Choose Stand21 Porsche Motorsport Racing Gloves? The Stand21 Porsche Motorsport Gloves provide a refined combination of certified protection, long-stint comfort, and professional racing performance. Their external-seam design minimizes pressure points, while the silicone grip and padded palm construction help maintain secure, controlled steering input. For drivers seeking officially licensed Porsche Motorsport gear without compromising safety or performance, these gloves deliver premium materials, authentic styling, and FIA-approved construction. Stand21 Porsche Motorsport Glove Size Chart Frequently Asked Questions Are the Stand21 Porsche Motorsport Gloves officially licensed?Yes. These gloves feature officially licensed Porsche Motorsport branding. What safety certification do these racing gloves have?They are homologated to the FIA 8856-2018 standard for competitive auto racing. Why are the seams stitched on the outside?External seams move bulky stitching away from the fingers and palms, helping reduce pressure points while improving comfort and steering-wheel feel. Do the gloves have silicone grip?Yes. Silicone grip zones are positioned across the palms and fingers to improve steering-wheel control. How do the anti-vibration pads help the driver?The ergonomically positioned pads help distribute pressure, reduce vibration, and minimize discomfort or blistering during long driving sessions. What sizes are available?The Stand21 Porsche Motorsport Racing Gloves are available from Small, size 8, through 2XL, size 12. Are these gloves suitable for track days?Yes. They are suitable for racing, track days, driving instruction, time trials, and other performance-driving applications where FIA-approved gloves are preferred or required.

Schroth Profi II ASM FE Harness The Safe, Street Legal 4 Point Harness The Profi II ASM FE is essentially the same as the Profi II ASM, except it features a Push-Button cam lock. The red push button that says "Press" is necessary to retain street legality and so an EMT who shows up at an accident scene will know how to release your restraint. The FE version also features sewn in, bendable bolt-in tabs for the lap belt attachments, for use in applications where space is limited. It's designed to be used as a four point system, perfect for use in Driver Education cars or any other application where stock seats are retained. (A seat that was not originally designed for a sub strap should never be modified to accept one.) Legendary Anti-Submarine Technology The Profi II ASM incorporates Schroth's legendary ASM (Anti-Submarine) technology that is the only thing like it on the market. ASM is an extra fold of material sewn into the right shoulder belt that elongates at a different rate than the outboard belt. This allows your upper torso to twist slightly. On the rebound phase, your torso is planted firmly back in the seat rather than allowed to slide under the lap belt. You can add a single or dual sub strap to make this belt into a 5 point or 6 point at any time. Schroth tested this harness with a HANS device and the results were great. You can use a 4 point ASM Harness with any HANS device. The lap belts provided with this harness are only available with bolt-in hardware (it's sewn in) as they are most commonly needed in setups requiring street legality. If you need a different setup, please call (844) 438-7244. The shoulder straps come with wrapped-in B23C bolt-in brackets that can be easily removed to wrap around a roll bar or harness bar. See the Schroth Harness Installation Checklist here.

OMP ONE Nomex Pants Updated to meet the latest FIA 8856-2018 standard, the OMP ONE Series of fire-retardant underwear is designed to work together with OMP's Dry System Suits to allow for maximum cooling regardless of the heat. The ultra-lightweight ONE pants features 3D knitted inserts strategically placed to optimize body cooling. These high breathability inserts align with the breathable inserts of OMP's ONE and Tecnica Evo lines of fire suits, comprising the OMP DRY SYSTEM. The slim/athletic cut of the OMP ONE pants allows for a smooth, comfortable fit under your fire suit and improves moisture wicking to keep you dry and cool. Ultra flat anti-rubbing seams are used throughout to keep you comfortable during even the longest stints. OMP ONE PANT FEATURES FIA 8856-2018 Homologation OMP Dry System aligning cooling panels of underlayers and ONE or Tecnica Evo fire suits Ultra flat seams throughout Single smooth layer of aramidic fabric for ultra-light weight OMP ONE PANT SIZES XS/S: EU42-46 / US32-36 2XL: EU60-64 / US50-54

OMP HTE-R Racing Seat   The OMP HTE-R Racing Seat, which comes in size Regular or XL, is used in pro and amateur racing series all around the world because drivers prefer its protective, halo-style design and uncommonly comfortable construction. Based on a lightweight, gel-coated fiberglass shell, the Airtex material on the upholstered surfaces allows for exceptional breathability under high-temperature conditions. OMP HTE-R seats have removable base- and back-cushions with an ergonomic, split-leg bottom cushion. They are designed to work comfortably with any HANS device and harnesses. High side-bolsters provide excellent lateral leg support and the seats are side-mount (W fixing) for supreme safety. The OMP HTE-R XL version is 20mm wider, 20mm deeper (front to back), and 40mm taller than the Regular OMP HTE-R. OMP HTE-R RACING SEAT FEATURES FIA Homologation 8855-1999 SHELL: Fiberglass MOUNTING: W (side) HOLES: 5 WEIGHT: 9.4 to 10.5 kg (20.7 to 23.1 lbs.) HANS compatible 

Atlanta Motorsports Park Open Track Day on Friday October 25, 2024 Limited to 100 entries. This event will sell out, so sign up early to be sure you have a spot!   On Friday, October 25, 2024, Atlanta Motorsports Park and Discovery Parts are offering an open-lapping track day for advanced drivers. The pits and full main track at AMP will be open for advanced drivers only. There will not be any run groups, so you can run laps to your heart's content. This open track day is on the Friday before the Champ Car Race, which takes place on Saturday, October 26, and Sunday, October 27. The AMP/Discovery Parts open lapping day is the perfect opportunity for last-minute testing, car shake-down, AMP track orientation/familiarization, etc. Atlanta Motorsports Park Open Track Day Details You do not need to race in the Champ Car event in order to drive during the open-lapping track day on October 25. However, this open track day is for drivers with at least four (4) weekends of race track driving experience. If, for example, you're an HPDE instructor, usually juggling new drivers and rarely getting to drive your own car, this is the day you have been waiting for! This event is for experienced and advanced drivers only. No drivers with fewer than four (4) weekend track events under your belt will be allowed to drive on track. AMP Open-Lapping Track Day Pricing Early sign-up pricing is in effect for anyone signing up from now through Sept 18! Full Day: $275 (9:00am to 5:00pm, w/ lunch 1:00-2:00pm) Afternoon Only:  $175 (2:00pm to 5:00pm) Happy Hour:  $155 (4:00pm to 5:00pm) Pricing is per vehicle. So you can, for example, have multiple drivers using the same vehicle during different on-track sessions for the price of one $275 Full Day entry fee. Each participating driver must be an experienced, advanced driver and must be wearing an arm band before entering the track. AMP/Discovery Parts On Track Rules Hot pits are open under green flag conditions. Passing is allowed only after receiving a point-by and only on straights. No passing is allowed (point-by or otherwise) while cornering or in braking zones. Do not touch or cross the blend line. (Not kidding; don't do it.) Other rules will be discussed at the driver's meeting Friday morning. Rule Violations If you get black-flagged, report as soon as possible to the black flag station for consultation and/or further instructions. First Instance: Typically (but not always) the driver will receive a warning. Second Instance: Park that vehicle for the remainder of the day. That means none of the drivers of that vehicle can go on track. This will make you extremely unpopular. Don't do it. Required Driver Attire Helmet: Snell SA2015 or SA2020; FIA 8859-2015, FIA 8860 (FIA build date within 10 years). No motorcycle helmets. Pants: Full-length cotton or other natural material (no technical materials such as UnderArmour). Shirt: Short- or long-sleeved cotton or other natural material (no technical materials such as UnderArmour). Shoes: Closed-toed, securely tied/fastened. Participant Age Requirements To drive on the AMP race track, you must be at least 18 years old at the beginning of this event, with one exception: a person at least 16 years old, holding a current valid Competition License issued by NASA, PCA, BMWCCA, SCCA or HSR, will be permitted to drive on track. This person must present his/her original license (not a copy or a photo) at registration. Vehicle Tech: Download the vehicle tech form HERE Right-Seat Passengers: Passengers may be allowed on a case-by-case basis as determined by the event crew, typically after observing a driver's morning lapping. Right-seat passengers must have completed the Motorsports Safety Foundation Level 2 or higher certification class and present their original card (not a copy or a photo) at registration. Event Day Details: Download the event day details HERE. The event will take place rain or shine and has limited spots. No transfers are allowed and no refunds will be given for no-shows, cancelations, last-minute broken race cars, etc. No discounts/discount codes allowed for this event. Lastly, if you contact us with a question that is already answered above, a three-second penalty will be added to your lap time and the penalty will be noted on all social media. For example, if you ask eight already-answered questions, 24 seconds will be added and it will appear as though you were lapping on your bicycle.

Stilo ST5 GT ZERO 8860-2018 Carbon Helmet FIA 8860 Certification valid to 2033 for these ST5 GT Zero Carbon Fiber Helmets The Stilo ST5 GT ZERO 8860-2018 Carbon Helmet is one of Stilo's most advanced ST5-generation full-face racing helmets, combining an exceptionally lightweight ZERO carbon fiber shell with FIA 8860-2018 protection, integrated accessory ports, excellent visibility, and a design developed specifically for serious closed-cockpit competition. Built for professional racers and drivers who refuse to compromise on helmet weight or protection, the ST5 GT ZERO delivers the premium construction, comfort, and equipment integration that made the ST5 platform a favorite in GT, endurance, touring-car, and sports-car racing. FIA 8860-2018 Advanced Helmet Protection The ST5 GT ZERO is homologated to the FIA 8860-2018 advanced helmet standard. This high-level motorsport specification places demanding requirements on impact protection, shell strength, energy absorption, and penetration resistance. For racers competing in high-speed professional motorsport, FIA 8860-2018 construction provides a significant step above conventional club-level helmet specifications. Stilo ZERO Carbon Fiber Construction The defining feature of the ST5 GT ZERO is its extremely lightweight ZERO carbon fiber shell. Stilo developed the ZERO construction for racers looking to reduce helmet mass as much as possible while retaining FIA 8860-level protection. Lower helmet weight can reduce strain on the driver's head and neck during heavy braking, high lateral loads, long endurance stints, and extended race sessions. ST5 GT ZERO Helmet Weight Small shell: approximately 2.5 lbs. (1130 g) up to size 59 with intercom Large shell: approximately 2.7 lbs. (1230 g) up to size 64 with intercom These exceptionally low weights make the ST5 GT ZERO a premium option for racers who place a high priority on reducing helmet mass. Purpose-Built for Closed-Cockpit Racing The GT configuration is designed around the needs of drivers competing inside closed-cockpit race cars. Its aerodynamic shell, integrated accessory ports, ventilation capability, communication compatibility, and excellent eyeport visibility make it particularly well suited to GT, endurance, touring-car, prototype, and sports-car racing. Dual Integrated Side Ports One of the ST5 GT's most distinctive features is its pair of integrated side ports. Instead of attaching large external fittings to the helmet, Stilo incorporates the accessory connection points directly into the shell design. The side ports can be configured for several types of driver equipment, allowing the helmet to be tailored to the car and racing application. Side Port Accessory Options Integrated communication electronics Forced-air helmet systems Driver hydration systems Helmet Eject system integration Radio and communication connections When an accessory is not installed, the ports remain discreet and integrated into the helmet profile. GT vs. Naked ST5 ZERO The ST5 GT ZERO includes Stilo's multifunction side ports for electronics, air, hydration, and other accessories. The ST5 N ZERO, often referred to as the Naked version, removes the side-port system for drivers who prefer the cleanest and simplest possible shell configuration. Larger Eyeport for Improved Visibility The ST5 platform features a taller and lower eyeport than previous-generation Stilo helmets, providing improved visibility without sacrificing the coverage expected from a professional full-face racing helmet. The increased viewing area helps drivers see more of the cockpit, mirrors, gauges, apexes, surrounding traffic, and track environment. Center Pinch-Clip Visor Latch The ST5 visor uses Stilo's convenient center pinch-clip locking system. The centrally positioned latch is designed to make visor opening and closing easier, even while the driver is wearing racing gloves. This placement also allows the visor to be operated naturally with either hand. ST5 Visor Compatibility The ST5 GT ZERO uses the standard Stilo ST5 visor family, giving racers access to a wide variety of shield options for different lighting and weather conditions. Available ST5 shield options include clear, smoked, mirrored, colored, and other specialty configurations. Eight Top Ventilation Openings The ST5 GT ZERO includes eight top ventilation openings designed to help move cooling air through the helmet and reduce heat buildup during demanding sessions. These openings can also be used with compatible Stilo ST5 Top Air systems when forced-air cooling is desired. Forced-Air System Compatible For hot closed-cockpit cars, the ST5 GT ZERO can be configured with a compatible forced-air system. The helmet's integrated design allows air-system hardware to be added without turning the helmet into a bulky collection of external fittings. This makes the GT ZERO especially attractive for endurance racers and drivers competing in high-temperature cockpits. Integrated Communication Capability The ST5 GT platform was designed to accommodate professional racing communications. Compatible microphones, speakers, earbuds, radio connections, and other electronics can be integrated into the helmet depending on the driver's communication system. This approach helps keep wiring organized while maintaining the comfort and fit of the interior. Hydration System Compatible The ST5 GT ZERO can also accommodate a compatible driver drinking system through its integrated accessory architecture. For endurance racing and long sessions, hydration-system integration allows the driver to drink without removing safety equipment or relying on awkward external routing. Eject System Compatible The helmet can be configured for use with a compatible Eject helmet-removal system, providing teams and safety crews with another option when preparing the driver's complete safety package. Factory HANS Anchors Included The ST5 GT ZERO includes HANS/FHR post anchors, allowing the helmet to be used with compatible Head and Neck Restraint systems. Having the anchors installed as part of the helmet package simplifies race preparation and ensures the helmet is ready for the restraint equipment commonly required in professional motorsport. Contoured ST5 Cheek Pads The ST5 interior uses redesigned, contoured cheek pads developed to improve comfort and helmet stability. A proper racing helmet should remain firmly positioned on the head during braking, cornering, vibration, and aerodynamic loading without creating excessive localized pressure. Stilo ST5 GT ZERO Features FIA 8860-2018 homologation Certification valid through 2033 for these specific helmets Ultra-lightweight ZERO carbon fiber shell Approximately 1130 g small-shell weight with intercom Approximately 1230 g large-shell weight with intercom Designed for professional closed-cockpit racing Dual integrated multifunction side ports Communication-system compatible Forced-air system compatible Hydration-system compatible Eject system compatible Taller and lower eyeport for improved visibility Center pinch-clip visor latch Compatible with standard Stilo ST5 shields Eight top ventilation openings Compatible with Stilo ST5 Top Air systems Contoured comfort cheek pads Factory HANS/FHR anchors included Helmet bag designed to accommodate helmet and HNR included Why Choose the ST5 GT ZERO? The ST5 GT ZERO is built for the racer who wants the integrated functionality of the ST5 GT platform without giving up the weight advantage of Stilo's ZERO carbon construction. Its combination of FIA 8860-2018 protection, low shell weight, integrated communication and cooling options, excellent visibility, and HANS compatibility makes it especially well suited to demanding GT and endurance applications. Getting the Correct Stilo Fit A properly fitted racing helmet should feel snug and secure around the entire head with even pressure and no concentrated painful areas. Measure around the widest part of the head using a flexible measuring tape, approximately one inch above the eyebrows and around the rear of the skull. Take two or three measurements and use the largest consistent measurement when selecting a helmet size. Drivers moving from another helmet brand should select their Stilo size according to actual head circumference rather than assuming the same numerical size will fit identically. Stilo Size 59 Fit Note We have found that customers who normally wear a size 59 in other helmet brands are often more comfortable in a Stilo size 60, which moves the driver into the larger shell. Please measure carefully and order accordingly. Stilo ST5 GT ZERO Carbon Fiber Helmet Sizing Chart Questions & Answers What certification does the Stilo ST5 GT ZERO have?The ST5 GT ZERO is homologated to the FIA 8860-2018 advanced helmet standard. The certification on these specific helmets is valid through 2033. What makes the ZERO version different?The ZERO uses Stilo's lightweight premium carbon construction to minimize helmet weight while retaining FIA 8860-2018 protection. How much does the ST5 GT ZERO weigh?The small shell weighs approximately 1130 g, or 2.5 lbs., with intercom equipment, while the large shell weighs approximately 1230 g, or 2.7 lbs., with intercom equipment. What are the side ports used for?The two integrated side ports can support compatible electronics, forced-air equipment, hydration systems, and helmet-removal equipment depending on the driver's configuration. What is the difference between the ST5 GT ZERO and ST5 N ZERO?The GT ZERO includes Stilo's multifunction side ports. The N ZERO is the Naked version and eliminates the side-port system for a simpler shell configuration. Can I install a radio or communication system?Yes. The ST5 GT is designed to accommodate several compatible professional communication configurations. Can I connect a forced-air system?Yes. The helmet's ventilation openings and accessory architecture allow compatible Stilo forced-air components to be installed. Can I use a drinking system?Yes. Compatible hydration equipment can be integrated into the ST5 GT ZERO. Does the helmet include HANS anchors?Yes. HANS/FHR post anchors are included. What shields fit the ST5 GT ZERO?The helmet uses the standard Stilo ST5 shield family, giving drivers several clear, tinted, mirrored, and specialty visor options. How many top vents does the helmet have?The ST5 GT ZERO has eight top ventilation openings, which can also be used with compatible Stilo Top Air equipment. Why might I need a Stilo size 60 if I normally wear a 59?Fit varies between helmet manufacturers. Based on customer fitting experience, many drivers who typically wear a size 59 in other brands are more comfortable in a Stilo size 60. Does a helmet bag come with the ST5 GT ZERO?Yes. A Stilo helmet bag designed to accommodate the helmet and HNR is included. Does this helmet require a signature for delivery?Yes. This helmet ships with signature required for delivery.