718 Cayman GT4 RS

A1-154 Girodisc 2pc Front Brake Rotors for Porsche GT3/GT2/GT4 RS PCCB FITMENT: Porsche GT3 (991) w/ factory PCCB Porsche GT3RS (991) w/ factory PCCB Porsche GT2RS (991) w/ factory PCCB Porsche GT4RS (718) w/ factory PCCB This 410mm Girodisc conversion system is a direct front rotor replacement for the Porsche 991.1 or 991.2 GT3, GT3RS, GT2RS, and GT4RS originally equipped with PCCB brakes. These two-piece floating iron rotors with aluminum hats will bolt directly to your Porsche and work flawlessly with the OEM front calipers. You must use must use the pad shape used on the 991 GT3 with iron rotors. The annulus (pad swept height) of these rotors is smaller than the PCCBs to keep rotor weight low and allow far better pad selection. By upgrading your brakes with lightweight, high-performance Girodisc rotors, especially when paired with Girodisc A2-154 rear rotors, your Porsche's factory brake bias and ABS efficiency are maintained. The low rotational mass and unsprung weight of Girodisc rotors allows for quick acceleration and fast transient suspension response. Most racers replace the factory PCCBs with Girodisc rotors to avoid the inevitable damage to fragile carbon-ceramic discs when swapping wheels at the track. We suggest using these rotors with these Pagid 4924 or PFC brake pad profiles normally used in the Porsche 991 GT3 without PCCB. When combined with RF1 Racing brake fluid or the New HALO P1 High Performance Brake Fluid, you'll have an extremely reliable and durable solution to cracked or broken carbon-ceramic rotors at a fraction of the cost of factory PCCBs. The central hat section of the Girodisc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron constructed in the USA, made to the same specification with the same material used by professional racing organizations. The rotors' curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc. The rotor and hat mount together through a floating mount system which utilizes ten high strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by Grade-12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The two-piece Girodisc design allows for disc-only replacement as well, minimizing future replacement costs and delivering outstanding performance. Sold/priced per pair.

A2-154 Girodisc 2pc REAR Brake Rotors for Porsche (OEM PCCB) Fits The Following Cars With OEM PCCB: Porsche 991.1 and 991.2 GT3 Porsche 991.1 and 991.2 GT3RS Porsche 991.2 GT2RS Porsche 718 Cayman GT4RS This 390mm Girodisc conversion system is a rear rotor direct replacement for any Porsche 991 GT3, GT3RS, GT2RS, and GT4RS originally equipped with PCCB brakes. These two-piece floating iron rotors will bolt directly to the car and work with your OEM calipers perfectly. By upgrading your brakes with these lightweight, high-performance Girodisc rotors (paired with the A1-154 front rotors), your factory brake bias and ABS efficiency are maintained. The low rotational and unsprung weight allows for quicker acceleration and transient suspension response. Most racers replace the factory PCCBs with steel two-piece rotors to avoid the inevitable damage to the fragile carbon ceramic discs when swapping wheels at the track! When used with Pagid or PFC performance brake pads and CMS RF1 racing brake fluid, you have an powerful, durable solution to cracked or broken carbon-ceramic rotors at a fraction of the cost of replacing the factory PCCB units. The central hat section of each Girodisc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron constructed in the USA, made to the same specification with the same material used by professional racing organizations. The rotors' curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc. The rotor and hat mount together through a floating mount system which utilizes ten high strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by class 12.9 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The two-piece Girodisc design allows for disc-only replacement as well, minimizing future replacement costs and delivering outstanding performance. Sold/priced per pair.

D1-154 GiroDisc Replacement Rotors (OEM PCCB) One pair of Girodisc replacement 410mm rotor rings for the Girodisc A1-154 for Porsche 991 and 992 GT2RS/GT3/GT3RS and 718 GT4RS.  two-piece floating rotor systems. Includes all necessary replacement hardware that must be used when replacing rotor rings. Sold/priced per pair. Features: • Built for racing reliability and consistent performance • Compatible with demanding track environments • Designed for perfect fit and easy installation FAQs: Is this part track-proven? Yes, it has been tested extensively under racing conditions. Does it require professional installation? While not required, professional installation is recommended for best performance. Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility. Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.

D2-154 Girodisc Rear Replacement Rotor Rings (OEM PCCB) One pair of Girodisc replacement 390mm rotor rings for the Girodisc A2-154 Fitment for Porsche 991 and 992 GT3/GT3RS plus 718 GT4RS two-piece floating rotor systems. Includes all necessary replacement hardware that must be used when replacing rotor rings. Sold/priced per pair. Features: • Built for racing reliability and consistent performance • Compatible with demanding track environments • Designed for perfect fit and easy installation FAQs: Is this part track-proven? Yes, it has been tested extensively under racing conditions. Does it require professional installation? While not required, professional installation is recommended for best performance. Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility. Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.

RT RE10*:RE10 is the ultimate endurance race compound offering a balance of excellent stopping power, low thermal conductivity, extremely low pad and disc wear. Utilizing the latest friction material technology, RE10 offers consistent performance under the most demanding of environments. Typical Applications: Professional Endurance Racing, Club Racing, and HPDE on high demand brake platforms *Denotes a "race only" pad. Running a "racing use only" pad on the street could produce excessive noise and dust. Disc wear could be accelerated if driven at cold temperatures or used in the incorrect temperature range. Racing pads are designed to work in specific temperature ranges so it is important to choose the desired compound for the correct environment the vehicle will be used in. Pad Compounds are run on a brake dynamometer over multiple brake applications (stops) to test the materials in a controlled environment for the most accurate data. Wear rates and temperatures can be influenced by car setup, grip levels, track layout/configuration and many other variables.

RT RE10*:RE10 is the ultimate endurance race compound offering a balance of excellent stopping power, low thermal conductivity, extremely low pad and disc wear. Utilizing the latest friction material technology, RE10 offers consistent performance under the most demanding of environments. Typical Applications: Professional Endurance Racing, Club Racing, and HPDE on high demand brake platforms *Denotes a "race only" pad. Running a "racing use only" pad on the street could produce excessive noise and dust. Disc wear could be accelerated if driven at cold temperatures or used in the incorrect temperature range. Racing pads are designed to work in specific temperature ranges so it is important to choose the desired compound for the correct environment the vehicle will be used in. Pad Compounds are run on a brake dynamometer over multiple brake applications (stops) to test the materials in a controlled environment for the most accurate data. Wear rates and temperatures can be influenced by car setup, grip levels, track layout/configuration and many other variables.

Castrol SRF Racing Brake Fluid With 518º F Wet Boiling Point Castrol React SRF is a very high-performance brake fluid specifically developed for motorsports applications where extreme braking conditions are encountered. Castrol SRF has an exceptionally high wet boiling point of 518° F (256º C) along with a very respectable 590° F dry boiling point. Both exceed DOT 4 specifications. Castrol SRF Brake Fluid's unique silicon ester technology absorbs less water than conventional glycol ether fluids and prevents the fluid's high-temperature performance from deteriorating. Its wet boiling point of 518° F is vastly superior to the minimum requirement demanded by the current US DOT 4 specification. Its ability to withstand temperatures in excess of 590° F and superior resistance to the effects of absorbed water have established Castrol SRF Brake Fluid as the world's premier fluid for the hydraulic brakes used in all forms of motorsport and racing. Castrol SRF brake fluid can make a critical difference when using metallic brake pads with high thermal conductivity. Resistance to foaming makes it an excellent choice for use with ABS braking systems. Castrol React SRF Racing Brake Fluid is now packaged in easy-pour 1 liter plastic bottles. Castrol React SRF Racing Brake Fluid Details Manufacturer: Castrol Manufacturer part number: 12512 UPC: 079191005125 Size: 1 liter Service life: 18 months DOT Rating: DOT 4 Dry Boiling Point: 590° F (296º C) Wet Boiling Point: 518° F (256º C) Compatible with other DOT3/DOT4: Yes Size: 1 liter (33.8 fl. oz.) plastic bottles Development of Castrol React SRF Racing Brake Fluid Castrol React SRF evolved as a direct result of Castrol's ongoing Research and Development program for brake fluids which identified this silicon ester technology as providing considerable performance benefits when compared with conventional glycol ether borate ester fluids.Following exhaustive laboratory tests at Castrol's International Technology Centre in the UK, the final formulation for Castrol SRF was subjected to an extensive road-test program on the Gross Glockner and Stelvio passes high in the Austrian and Italian Alps. It then underwent an independent track test program conducted by a famous Formula One racing team. Their assessment was that "Castrol SRF is the best racing brake fluid we have ever used." Subsequently, Castrol SRF was offered to top-flight racing and rally teams throughout the world including most of the Formula One team, the all-conquering Jaguar and Mercedes -Benz sports car teams, and the Audi, Nissan, and Toyota rally teams. Enthusiastic recommendation by these experts soon created immense interest in Castrol SRF throughout the whole spectrum of national and international motorsport. Today, Castrol React SRF is regarded by the international motorsport community as being without equal and it is chosen not only by factory-supported teams but by private competitors throughout the world. The Solution To High-Temperature Vapor Lock All conventional brake fluids used in cars and motorcycles are hygroscopic, that is, they absorb water from their surroundings. Strange though it may seem, the flexible hoses incorporated in braking systems are permeable to water and in time enough, water can find its way into the system via the hoses and seriously affect the brake fluid's performance. This water reduces the boiling point of the fluid (i.e., it lowers the temperature at which gas bubbles begin to form). When these bubbles form, they turn a virtually incompressible liquid into a mixture of gas and liquid which can be compressed quite considerably, thus severely reducing the efficiency of the brakes. In this situation, a driver finds that the brakes feel spongy. Brake-pedal travel will increase and it may be necessary to 'pump' the pedal to get the brakes to function effectively. However, when the brake fluid reaches a temperature at which the water in the fluid causes gas to be produced, which is equal to the volume swept by the piston in the master-cylinder, vapor-lock occurs and the brakes become inoperative. When this happens, the first indication the driver has that something is wrong is when he applies the brakes. The pedal goes down to the floor and the car carries on at undiminished, possibly fatal speed.The silicon ester technology in Castrol React SRF addresses this problem in two ways. Firstly, Castrol SRF is less hygroscopic than conventional brake fluids - it absorbs less water in a given time. Secondly, unlike conventional glycol ether fluids, Castrol SRF reacts chemically with the absorbed water to reduce its adverse effects, thus preventing the fluid's high-temperature performance and safety margins from deteriorating as rapidly as they would otherwise do.Castrol React SRF exceeds the US Federal Standards FMVSS 116 DOT 3 and DOT 4, ISO 4925, JIS K2233, and current SAE J1703 and is miscible with all conventional brake fluids conforming to these standards. However, mixing Castrol React SRF and conventional brake fluids will reduce the benefits of Castrol React SRF. It is strongly recommended that conventional brake fluid be drained from the system before flushing and refilling with Castrol React SRF.

The World's Most Advanced Racing Brake Fluid Imagine you're on the race track, hitting the entry to a corner. Your foot hammers down on the brake, and you feel... absolute perfection. That's Halo P1 for you. Developed with Fade Resistant Technology, this specialist brake fluid is the secret sauce for top-tier motorsport enthusiasts worldwide. Why? Because when you're tearing up the track, the last thing you want is a mushy pedal feel. Halo P1 delivers a low and stable compressibility profile over an extended temperature range, not to mention a crazy-high dry boiling point of 341º C (646º F). All of this is to ensure your brake pedal feel remains as strong and consistent as your lap times. Halo P1 Brake Fluid Features & Benefits That'll Make You Weep Tears of Joy Fade Resistant Technology: Keeps your pedal feel consistent, lap after lap, so you can focus on nailing those corners. Pure Methyl Borate Ester Base: The purity level here is so high, it's like the distilled essence of speed itself, ensuring extreme resistance to compression, even when things get hot (and we mean really hot). World-Beating Dry Boiling Point: At 341° C (646° F), it's like this fluid laughed in the face of boiling points and set a new standard. Low Viscosity & High Lubricity: Because your brake system deserves to be as smooth as your driving skills. What Makes Halo P1 Brake FLuid The Secret Weapon? While other brake fluids are off playing checkers, Halo P1 is mastering chess. It's not just another methyl glycol borate ester brake fluid; it's a revolution in braking performance. With its unique proprietary manufacturing process, it achieves the highest levels of purity and the lowest compressibility possible, remaining constant over a wide temperature range. This is the highest boiling point of any racing brake fluid on the market, folks. And the lubricity? Off the charts, especially at high temperatures. Halo P1 Brake FLuid FAQs That'll Clear the Air Before you rush off to convert your entire garage to a Halo P1 shrine, let's tackle some of those burning questions you might have: Can I use Halo P1 in my daily driver? As much as we love the enthusiasm, Halo P1 is a race-only formula. It's like putting a rocket booster on a bicycle – thrilling, but not recommended. How often should I change my brake fluid with Halo P1? Regular maintenance is key in racing. Check with your team or mechanic, but before every major race is a good rule of thumb. The Call to Action You've Been Waiting For So, are you ready to elevate your racing game to legendary status? To feel the rush of confidence as you brake later and harder, knowing your brake fluid won't let you down? It's time to switch to Halo P1. Your podium awaits.

AP Racing Radi-CAL R4 Racing Brake Fluid Highest Dry Boiling Point On The Market Today AP Racing Radi-CAL R4 racing brake fluid has the highest typical dry boiling point, at 340º C (644º F), of any racing brake fluid currently available on the market today. Radi-CALR4 racing brake fluid has been designed to perform better than any other product at the extremes of heavy-duty braking in top levels of professional racing. AP Racing Radi-CAL R4 has outstanding resistance to vapor lock and pedal fade under the most exacting conditions. A higher vapor lock point means a firmer brake pedal at the extremes of brake temperatures. Enhanced lubricity means R4 is a better lubricant than other market-leading racing brake fluids. This helps extend the life of the metal moving parts in your brake system while increasing system efficiency. Radi-CAL R4 can be mixed with other DOT3 and DOT4 racing brake fluid, but for maximum product performance your braking system should be thoroughly purged with R4 fluid. AP Racing Radi-Cal Pro R4 Brake Fluid Details Manufacturer: AP Racing Manufacturer part number: AP-CP7005 DOT rating: DOT4 Dry Boiling Point: 340º C (644º F) Wet Boiling Point: 195º C (383º F) Bottle Size: 500 ml (16.9 fl oz)