Blue Calipers

Real-Life High Boiling Point Without The Real High Price RF1 Racing Brake Fluid from CMS Performance is a fully-synthetic DOT4 brake fluid formulated to provide extraordinary performance under the most demanding high-temperature racing and track-day conditions. With a dry boiling point of 328º C (622º F), RF1 exceeds all DOT3 & DOT4 requirements and is compatible with all DOT 3, 4, and 5.1 fluids. (Not compatible with DOT5 or mineral-based brake fluids.) On the race track, brake systems operate at very high sustained temperatures, and there is perhaps no single safety system more important in racing than your brakes. No single part of that system is more critical than brake fluid. At CMS Performance, we got tired of (and a little nervous) using "racing" brake fluid at the race track that didn't live up to its claimed performance when things got hot. So we did something about it. Manufactured in partnership with Orthene, the brake fluid supplier to many teams in Formula 1, WEC, and other professional series, RF1 Racing Brake Fluid was formulated to maintain consistent viscosity, lubricity, and compressibility at the extreme system temperatures and line pressures found in racing and track days. The bottom line is this: you can spend more on brake fluid, but you can't buy higher-performance than RF1 Racing Brake Fluid. RF1 Racing Brake Fluid Details: Typical dry boiling point: 328º C (622º F) Typical wet boiling point: 204º C (399º F) Exceeds DOT3 & DOT4 standards Bottle size: 500 ml (16.9 fl oz) Click Here for Product MSDS Sheet A Word About Flushing Brake Fluid All brake fluid degrades over time (not mileage), attracting water as it ages, which, at high brake temperatures, can lead to fluid boil and brake fade or failure. That's why the "wet" (aged) boiling point of any brake fluid is substantially lower than the "dry" (new) boiling point. To maintain maximum braking performance, Competition Motorsport strongly suggests replacing your brake fluid before every track event, but at least every three months if you're consistently racing and/or driving at track days. It's cheap insurance against learning about brake fade the hard way!

Girodisc Brake Pad Spreader This indispensable tool is used by race teams, shops, and enthusiasts alike who have high performance four- and six-piston calipers. The spreader is designed to spread brake pads and pistons in four- and six-piston calipers to facilitate quick replacement of pads and/or rotors in a shop or racing environment.No more screwdrivers, pliers, hammers, or C-clamps! This tool will retract the pistons evenly and all the way back into their bores with one squeeze of the levers. The Girodisc spreader was designed around popular four-piston and six-piston calipers from Brembo, AP Racing, Alcon, and other performance calipers in racing and road use. To help fit in any caliper, the amount of throw is adjustable.Insert the spreading plates one way for wider six-piston calipers, then turn the spreader 90o and use the plate sides for four-piston calipers.The Girodisc Pad Spreader is made from heavy-gauge steel and is powder-coated for durability. The slider is cadmium-plated, and nylon pivot bushings ensure smooth action. The Girodisc Pad Spreader will quickly become an invaluable tool for any race team, shop, or enthusiast who changes pads and rotors with any frequency.

Discovery Parts is an authorized dealer for Girodisc products and one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.   Our replacement rings are sold in pairs and include replacement hardware. The only parts you will reuse are your existing GiroDisc hats. Please note that unless specifically noted, GiroDisc replacement rings are only designed to work with GiroDisc hats. They are not designed to be used with other brands, including hats from cars equipped with 2-piece rotors from the factory.

Discovery Parts is an authorized dealer for Girodisc products and one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.   Introducing the GiroDisc 2-piece rotors, designed as a direct replacement for the E46 M3 345mm rotors found on Competition Package (ZCP) and CSL models. Each rotor assembly weighs 17.5 lbs compared to the factory rotors' 19 lbs, significantly reducing unsprung weight and rotating mass on the front axle. Our rotor rings are machined from a proprietary high-carbon iron casting, formulated to GiroDisc's exacting specifications. This superior metallurgy ensures enhanced durability, while the 48 curved vanes act as a centrifugal pump, efficiently cooling the rotors during rigorous use. The innovative 2-piece design features a reusable hat that can be easily attached to new rings (part number D1-012) when replacement is needed. All key components, including hats, rotor rings, and drive pins, are manufactured in-house at our Bellingham, WA facility using domestically sourced materials. The hat is crafted from 6061-T6 aluminum with a black anodized finish. Drive pins, made from a high-strength steel alloy, are cadmium-plated for superior corrosion resistance. Each rotor assembly incorporates spring clips and Belleville washers, ensuring race-ready float while remaining street-friendly without noise from loose hardware. Our E46 M3 rotors are compatible with common aftermarket caliper setups, including Brembo calipers from both Porsche 996 and Megane RS swaps, in addition to the stock sliding calipers available on ZCP and CSL models. **Specifications:**- Diameter: 345mm- Thickness: 28mm- Weight: 17.5 lbs per rotor assembly We recommend replacing the rotor rings when the thickness reaches 26mm or if a crack extends to the edge of the ring. Priced and sold per pair.

Discovery Parts is an authorized dealer for Girodisc products and one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.   Introducing the GiroDisc 2-piece rotors, engineered as a direct replacement for the front rotors on the G80 M3, G82/83 M4, and G87 M2 models without carbon ceramic brakes. Our advanced 2-piece, fully floating assemblies significantly reduce unsprung weight and rotating mass from the front axle, enhancing vehicle performance. Crafted from a proprietary high-carbon iron casting, our rotor rings are meticulously machined to GiroDisc's stringent specifications. This superior metallurgy ensures exceptional durability, while the 72 curved vanes function as a centrifugal pump, effectively cooling the rotors during intense use. The innovative 2-piece design features a reusable hat that can be easily attached to new rings (part number D1-282) when replacement is necessary. All major components, including the hats, rotor rings, and drive pins, are manufactured in-house at our Bellingham, WA facility using domestically sourced materials. The hat is constructed from 6061-T6 aluminum and finished with a black anodized coating. The drive pins, made from a high-strength steel alloy, are cadmium-plated for enhanced corrosion resistance. Each rotor assembly includes spring clips and Belleville washers, ensuring race-ready float while maintaining street-friendly noise levels. We recommend replacing the rotor rings when the thickness reaches 34mm or if a crack extends to the edge of the ring. Priced and sold per pair.

Discovery Parts is an authorized dealer for Girodisc products and one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.   Our replacement rings are sold in pairs and include replacement hardware. The only parts you will reuse are your existing GiroDisc hats. Please note that unless specifically noted, GiroDisc replacement rings are only designed to work with GiroDisc hats. They are not designed to be used with other brands, including hats from cars equipped with 2-piece rotors from the factory. We recommend replacing the rotor rings when they reach a minimum thickness of 22mm or if a crack extends to the edge of the ring. These rotors are sold and priced per pair.

Discovery Parts is an authorized dealer for Girodisc products and one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.   Our replacement rings are sold in pairs and include replacement hardware. The only parts you will reuse are your existing GiroDisc hats. Please note that unless specifically noted, GiroDisc replacement rings are only designed to work with GiroDisc hats. They are not designed to be used with other brands, including hats from cars equipped with 2-piece rotors from the factory. We recommend replacing the rotor rings when they reach a minimum thickness of 22mm or if a crack extends to the edge of the ring. These rotors are sold and priced per pair.

Discovery Parts is an authorized dealer for Girodisc products and one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.   These GiroDisc 2-piece rotors are designed as direct replacements for the rear rotors found on the G80 M3, G82/83 M4, and G87 M2 models without carbon ceramic brakes. Featuring fully floating assemblies, they effectively reduce unsprung weight and rotating mass from the vehicle's axle. The rotor rings are precision-machined from a proprietary casting of high-carbon iron formulated to GiroDisc’s exact specifications. This advanced metallurgical composition ensures superior durability, while the 48 curved vanes function as a centrifugal pump, drawing air through the hub to efficiently cool the rotors during demanding conditions. The 2-piece design incorporates a reusable hat, allowing easy attachment to new rings (part number D2-282) when replacement is necessary. All key components, including hats, rotor rings, and drive pins, are manufactured in-house at our Bellingham, WA facility using domestically sourced materials. The hat is crafted from 6061-T6 aluminum and features a durable black anodized finish. Drive pins are made from a high-strength steel alloy and coated with cadmium for enhanced corrosion resistance. Rotors are assembled with spring clips and Belleville washers to ensure optimal float for racing applications, while maintaining quiet operation on the street without the risk of loose hardware. We recommend replacing the rotor rings when they reach a minimum thickness of 22mm or if a crack extends to the edge of the ring. These rotors are sold and priced per pair.

Race Technologies Racing Brake Pads RT RE10 COMPOUND1 RE10 is the ultimate endurance race compound, offering a balance of excellent stopping power, low thermal conductivity, and extremely low pad and rotor wear. Utilizing the latest friction material technology, Race Technologies RE10 offers consistent performance in the most demanding environments. Typical applications include professional endurance racing, club racing, and HPDE on high braking demand platforms. RACING PAD NOTES: Running a "racing use only" pad on the street could produce excessive noise and dust. Rotor wear could be accelerated if driven at consistently cold temperatures or used in the incorrect temperature range. Racing pads are designed to work in specific temperature ranges so it's important to choose the right compound for the environment the vehicle will be used in. Pad compounds are tested on a brake dynamometer over repeated brake applications to test the materials in a controlled environment. Real-world wear rates and temperatures will be influenced by car setup, grip levels, track layout and other variables. Note 1: "RE" denotes a "racing use only" pad compound.

REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. Discovery Parts is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most Girodisc products the same or next business day to ensure we meet your delivery deadline. These Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. The replacement rotor rings and hat mount together through a floating mount system which utilizes 8-10 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 rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. Discovery Parts is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most Girodisc products the same or next business day to ensure we meet your delivery deadline. These Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. The replacement rotor rings and hat mount together through a floating mount system which utilizes 8-10 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 rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

Discovery Parts is an authorized dealer for Girodisc products and one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.   Fits BMW F8x M2/M3/M4 w/ Steel Brakes This particular application is exclusively designed for M2, M3, and M4 cars equipped with blue calipers and iron rotors.If you own an M2 Competition, please refer to our front rotors specifically designed for that model.For vehicles equipped with carbon ceramic brakes, we offer direct replacement iron rotors.The Girodisc system serves as a direct replacement for the original equipment (OE) disc, requiring no modifications. It can be easily bolted onto your car and works seamlessly with OE calipers. By upgrading your brakes with lightweight high-performance replacements instead of a big brake kit, you maintain your factory bias and ABS efficiency.The central hat section of our rotor is crafted from 6061-T6 aircraft-grade aluminum sourced exclusively from the United States. The disc itself is made from our proprietary cast iron, poured and machined entirely in-house at Girodisc. Utilizing a curved vane design derived from racing technology, the rotor acts as a centrifugal pump, efficiently channeling cooling air through the disc.Our rotor and hat employ a floating mount system, featuring 10 high-strength alloy steel drive pins manufactured by Girodisc in the USA to our precise specifications. These pins are cadmium plated for long-lasting corrosion resistance and bear the load during braking while allowing axial and radial float between the hat and disc. Secured by class 12.9 cap screws with hardened washers, the pins ensure stability. To prevent noise when cold, anti-noise spring washers are installed on the rotor side, allowing the rotor to expand with heat while eliminating rattling and noise associated with floating rotors. This float also facilitates self-centering of the rotor between the pads.Once the Girodisc system is installed, simply replace the cast iron rotor when necessary.Sold and priced as a pair.

Discovery Parts is an authorized dealer for Girodisc products and one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline.   Fits BMW F8x M2/M3/M4 w/ Steel Brakes This particular application is exclusively designed for M2, M3, and M4 cars equipped with blue calipers and iron rotors.If you own an M2 Competition, please refer to our front rotors specifically designed for that model.For vehicles equipped with carbon ceramic brakes, we offer direct replacement iron rotors.The Girodisc system serves as a direct replacement for the original equipment (OE) disc, requiring no modifications. It can be easily bolted onto your car and works seamlessly with OE calipers. By upgrading your brakes with lightweight high-performance replacements instead of a big brake kit, you maintain your factory bias and ABS efficiency.The central hat section of our rotor is crafted from 6061-T6 aircraft-grade aluminum sourced exclusively from the United States. The disc itself is made from our proprietary cast iron, poured and machined entirely in-house at Girodisc. Utilizing a curved vane design derived from racing technology, the rotor acts as a centrifugal pump, efficiently channeling cooling air through the disc.Our rotor and hat employ a floating mount system, featuring 10 high-strength alloy steel drive pins manufactured by Girodisc in the USA to our precise specifications. These pins are cadmium plated for long-lasting corrosion resistance and bear the load during braking while allowing axial and radial float between the hat and disc. Secured by class 12.9 cap screws with hardened washers, the pins ensure stability. To prevent noise when cold, anti-noise spring washers are installed on the rotor side, allowing the rotor to expand with heat while eliminating rattling and noise associated with floating rotors. This float also facilitates self-centering of the rotor between the pads.Once the Girodisc system is installed, simply replace the cast iron rotor when necessary.Sold and priced as a pair.

Pagid Racing RSL 29 (Yellow) The Pagid RSL 29 (Yellow) is the world-leading endurance brake pad used by most of the winning teams in motorsports.  This racing compound combines the outstanding wear rate of the RS 19 with a slightly higher coefficient of friction and initial bite. Based on the more aggressive Pagid RS 14 (Black), a slight reduction of the friction value improves the modulation (control) of RSL 29. Nevertheless, RSL 29's friction value is high enough for cars without power-assisted brake system and ensures comfortable low effort on the brake pedal. Constant temperatures up to 600° C (1100° F) are possible. This combination of friction value, fade stability and low wear on pads and rotors is unmatched. Pagid RSL 29 provides very high levels of performance and response at all temperatures; not much heat is needed to bring the pad up to its optimum performance level. It's a favorite with endurance racers, having won many classes at major endurance events at Le Mans, Daytona, Spa, Nurburgring, etc. Exceptional pad life and very low rotor wear have made it possible to run 24 hours without a change of pads or rotors! Although designed primarily for endurance racing, RSL 29's consistent levels of performance and user friendliness make it popular for sprint- and short distance races as well. RSL 29 has also found favor in the growing track day market due to the level of control, good cold performance, long life, and low rotor wear.  

Pagid Racing RSL 29 (Yellow) The Pagid RSL 29 (Yellow) is the world-leading endurance brake pad used by most of the winning teams in motorsports.  This racing compound combines the outstanding wear rate of the RS 19 with a slightly higher coefficient of friction and initial bite. Based on the more aggressive Pagid RS 14 (Black), a slight reduction of the friction value improves the modulation (control) of RSL 29. Nevertheless, RSL 29's friction value is high enough for cars without power-assisted brake system and ensures comfortable low effort on the brake pedal. Constant temperatures up to 600°C (1,100°F) are possible. This combination of friction value, fade stability and low wear on pads and rotors is unmatched. Pagid RSL 29 provides very high levels of performance and response at all temperatures; not much heat is needed to bring the pad up to its optimum performance level. It's a favorite with endurance racers, having won many classes at major endurance events at Le Mans, Daytona, Spa, Nurburgring, etc. Exceptional pad life and very low rotor wear have made it possible to run 24 hours without a change of pads or rotors! Although designed primarily for endurance racing, RSL 29's consistent levels of performance and user friendliness make it popular for sprint- and short distance races as well. RSL 29 has also found favor in the growing track day market due to the level of control, good cold performance, long life, and low rotor wear.