WRX STi (2004-07)

Girodisc Subaru WRX STI ('04–07) Rear Rotors Upgrade your 2004–2007 Subaru WRX STI with Girodisc lightweight two-piece rear rotors engineered for precision, durability, and improved heat management. These rotors deliver faster response, reduced fade, and sharper braking feel while maintaining factory balance and ABS performance. Perfect for both daily driving and high-performance track use. Vehicle Fitment Compatible with:• Subaru WRX STI (2004–2007)• Subaru WRX STI Limited (2007)Direct OEM replacement – bolts directly to factory hubs and calipers. Note: Minor pad modification may be required for proper clearance (see below). Track-Tested, Street-Ready Braking Performance The Girodisc system replaces the OEM one-piece rotors with a two-piece floating design to reduce unsprung mass and improve heat dissipation. Each rotor hat is CNC-machined from 6061-T6 aircraft-grade aluminum and hard-anodized for strength and corrosion resistance. The proprietary cast-iron rings are made and machined in the USA, featuring curved directional vanes that draw cooling air through the disc for maximum thermal efficiency. The result is consistent, fade-free braking performance under the most demanding conditions. Features • Direct OEM replacement for 2004–2007 Subaru WRX STI rear rotors• Lightweight two-piece floating rotor assembly• CNC-machined 6061-T6 aluminum hats with anodized finish• Proprietary cast-iron friction rings with curved directional vanes• Cadmium-plated drive pins resist corrosion and fatigue• Anti-noise spring washers eliminate rattle and vibration• Retains OEM parking brake compatibility• Approximately 7 lbs lighter per rotor than stock• Fully rebuildable – replace only iron rings when worn• Sold/priced per pair Installation Note The OEM pads and some aftermarket brake pads require slight modification to fit the Girodisc hardware layout while maintaining OEM parking brake operation. This involves lightly grinding the backing plate of the pad to match the pad material arc. Girodisc includes instructions, and all pads purchased directly from Girodisc come pre-modified for a plug-and-play fit. Girodisc A2-007 Rear Rotor FAQs: Do these rotors fit directly on the 2004–2007 STI? Yes. The A2-007 rotors are designed specifically for the GD-chassis WRX STI and bolt directly to the factory hub and calipers. Why is pad modification needed? Girodisc’s floating two-piece design changes the hardware arrangement slightly, requiring a small pad clearance adjustment to ensure proper fit and full parking brake functionality. How much lighter are these than stock rotors? Approximately 7 lbs per corner—11 lbs each compared to roughly 18 lbs stock—reducing unsprung weight and improving handling response. Are these suitable for aggressive driving or track use? Absolutely. The Girodisc design offers superior heat control, reduced fade, and consistent braking during sustained high-temperature operation. Experience precise braking control and lasting performance with Girodisc rear rotors for your Subaru WRX STI—engineered for the driver who demands performance without compromise.

Girodisc Subaru WRX STI (2004–2017) Front Rotors The Girodisc system is a direct replacement for the OEM front rotors on the 2004–2017 Subaru WRX STI. Weighing only 16.6 lbs per rotor, these lightweight 2-piece assemblies dramatically reduce unsprung and rotational mass, improving steering response, acceleration, and suspension control. Designed for both high-performance street use and demanding track conditions, the Girodisc system maintains factory brake bias and ABS functionality while delivering improved cooling and endurance. Precision Engineering The rotor rings are machined from Girodisc’s proprietary high-carbon iron alloy, poured and processed entirely in-house in Bellingham, Washington. This advanced metallurgy ensures superior thermal stability and wear resistance under extreme braking conditions. The 30 curved vanes act as centrifugal pumps, drawing air through the hub to enhance rotor cooling during high-load track sessions. Features Direct bolt-on replacement for OEM front rotors – no modifications required Lightweight two-piece floating design reduces unsprung weight Proprietary high-carbon iron rings ensure consistent performance and long life 6061-T6 aluminum hat, hard anodized for durability Floating hardware with spring clips and Belleville washers for quiet operation Curved vane internal design maximizes air flow and cooling Fully rebuildable – replace iron rings while reusing the hats and hardware Manufactured entirely in the USA using domestically sourced materials Vehicle Fitment Subaru WRX STI (2004–2017) Technical Specifications Part Number: A1-007 Position: Front Diameter: 326mm Thickness: 30mm Weight: 16.6 lbs per rotor Rotor Type: Two-piece floating Hat Material: 6061-T6 aluminum (black anodized) Disc Material: Proprietary high-carbon cast iron Vane Design: 30 curved directional vanes Drive Pins: High-strength steel alloy, cadmium-plated Sold/Price: Per pair FAQs for Girodisc A1-007 Are these a direct fit for my Subaru WRX STI? Yes. They bolt directly onto all 2004–2017 Subaru WRX STI models with factory calipers and require no additional hardware. Can I reuse the aluminum hats? Yes. The Girodisc system is fully rebuildable—only the iron rotor rings need to be replaced when worn. Will they make noise on the street? No. The included Belleville washers and spring clips eliminate the rattles commonly associated with floating rotors. Are these suitable for track days? Absolutely. Girodisc rotors are engineered for heavy braking, offering superior heat resistance, minimal fade, and consistent performance on the track. Upgrade your Subaru WRX STI with Girodisc’s precision-engineered floating front rotors—built to deliver race-proven performance, reduced weight, and uncompromising stopping power.

Girodisc A1-007 Front Rotors for Subaru STI (2004+) Discontinued FITS: Subaru STI 2004+ (front) This is the old version with the straight grooves as shown.  Not the new curved grooves.  These are final sale, no returns or exchanges.  One set available Competition Motorsport is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most products the same or next business day to ensure we meet your delivery deadline. This Girodisc system upgrades the OEM brakes to a two-piece steel disc and aluminum hat. This two-piece floating rotor design will bolt directly to the Subaru STI front and work flawlessly with OEM calipers. Upgrading your brakes to lightweight, high-performance Girodisc rotors, you maintain the factory brake bias and ABS effectiveness. Much lighter than the OEM rotors, Girodisc rotors reduce rotational and unsprung mass giving you stronger braking and faster suspension response. Combined with Pagid or PFC performance brake pads and Competition Motorsport RF-1 brake fluid, Girodisc rotors are the ultimate solution to overheated, cracked, warped rotors that result from high-performance driving. The central hat of the rotor is made from 6061-T6 aircraft aluminum. The disc is manufactured in the USA from the same cast iron used by professional racing organizations. Its curved-vane design, developed in racing, acts like a centrifugal pump forcing cool air through the disc. The disc and hat mount together through a floating mount system using ten cadmium plated, high-strength alloy steel drive pins manufactured by Girodisc. These drive pins transfer braking load while maintaining axial and radial float between the disc and hat to allow for heat expansion. Anti-noise spring washers eliminate the noise typically associated with floating rotors. This two-piece Girodisc design allows for disc-only replacement, reusing the hat to minimize maintenance costs. Sold/priced per pair.

Girodisc Subaru WRX STI Rear Rings Restore the braking precision of your Subaru WRX STI with Girodisc D2-007 316mm rear replacement rings. These precision-machined rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Replace only the wear surface to maintain peak braking performance and save on long-term maintenance costs while preserving your car’s factory brake bias. Vehicle Fitment Compatible with:• Subaru WRX STI (2004–2017, all trims)• Subaru Impreza WRX STI (GD, GR, GV, VA chassis)Note: For use with Girodisc 316mm two-piece rear rotor systems only. Not compatible with OEM one-piece or carbon-ceramic rotors. Features • Sold as a left/right pair with full floating hardware kit• Direct replacements for Girodisc 316mm two-piece rear rotors• CNC-machined from proprietary high-carbon cast iron• Directional curved vanes improve airflow and reduce fade• Maintains OEM brake bias and ABS calibration• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands Specifications • Diameter: 316mm• Position: Rear• Material: High-carbon cast iron• Mount type: Floating two-piece system• Includes: Two rings and new hardware kit• Sold/priced per pair• MSRP: $630.00 Girodisc D2-007 Subaru WRX STI Rear Replacement Ring FAQs Do these fit factory WRX rotors? No. These are designed exclusively for Girodisc two-piece rear rotor systems and will not fit OEM one-piece rotors. Will they clear OEM Brembo calipers? Yes. They are built to factory dimensions and work perfectly with the stock STI Brembo rear calipers. Are these recommended for track use? Absolutely. Girodisc’s floating design and high-carbon alloy manage heat efficiently, preventing warping and fade during extended track sessions. How often should I replace the rings? Replace when the rotor reaches minimum thickness or shows visible cracking or heat checking from repeated heat cycles. Upgrade your Subaru WRX STI with Girodisc D2-007 316mm rear replacement rings — engineered for lightweight performance, superior cooling, and consistent braking response from canyon runs to track days.

D1-007 Girodisc Front Replacement Rotor Rings Fits the Following Vehicles: Subaru WRX STi (2004-07) Subaru WRX STI (2008-17) REPLACEMENT ROTOR RINGS AND INSTALLATION HARDWARE ONLY. DOES NOT INCLUDE ALUMINUM HATS. Competition Motorsport is an authorized dealer for Girodisc products and we are 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. The Girodisc replacement rotor system is a direct rotor disc replacement for the Girodisc 2-piece hat and rotor and no modifications are necessary. The rotor 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 braking 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 2-piece Girodisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

Pagid Racing Brake Pad Shape No. 2487 Fits the Following Vehicles: Make Model Build (Year) Front Rear Aston Martin DB9 04 - 16 X Aston Martin Vantage V8 GT4 ProDrive [race car] stock OE caliper 12 - X Audi RS3 Sportback [8PA] 11 - 12 X Audi TT RS 2.5 Quattro 09 - 14 X Cadillac CTS-V (4 piston front caliper) 03 - 09 X Chevrolet Camaro SS [Gen 5] 09 - 15 X Chevrolet Camaro SS [Gen 6] 4 Piston Brembo caliper 16 - X Chevrolet Corvette C7 base 13 - 20 X Chevrolet Corvette C7 Z51 14 - X Dodge Viper SRT TA (time attack) 14 - 17 X Ford GT 04 - 06 X Ford Mustang Boss 302 12 - 13 X Ford Mustang GT [4 piston Brembo] 11 - 14 X Ford Mustang Shelby GT500 [4 piston Brembo caliper / 15" disc] 07 - 14 X Honda Civic Type R [Brembo brakes] Gen IX and X 15 - X Hyundai Genesis Coupe 3.8 track 10 - 16 X KIA Stinger 3.3 T-GDI V6 [4 piston Brembo] 18- X Maserati Ghibli (M157) [4-piston Brembo caliper / disc ø 345mm] 13 - X Mitsubishi Lancer Evo V - Evo IX 98 - 06 X Mitsubishi Lancer Evo X 07 - 16 X Subaru STI 3rd & 4th generation 03 - 16 X Volvo S60 Turbo R Brembo brakes 03 - 07 X Volvo V70 R 2.5T Brembo brakes 03 - 07 X Fits the Following Calipers: Make Type Remarks Shape No. Brembo M4 in combination w/ 62mm radial disc swept depth 16mm 2487 Pagid Racing Brake Pads are engineered for high-performance driving, delivering exceptional stopping power, durability, and control under the most demanding conditions. Trusted by professional racers and performance enthusiasts worldwide, these pads are crafted using advanced friction materials and cutting-edge technology to ensure consistent performance, low fade, and excellent modulation. Whether you're on the track or tackling aggressive street driving, Pagid Racing Brake Pads provide the reliability and confidence you need to push your vehicle to its limits. Pagid Racing Brake compounds are for steel (cast iron) rotors only unless otherwise noted. RS 14 Compound: The Pagid RS 14 (Black) is a high friction value ceramic compound with very good modulation and high fade resistance. A very popular, aggressive pad with strong initial bite and high torque. In addition to the track-day environment, RS14 has shown success in short- to medium-distance circuit racing as well as gravel and tarmac rallying. RSL 29 Compound: The Pagid RSL 29 (Yellow) is the world-leading endurance brake pad used by most of the winning teams in motorsport. Although designed primarily for endurance racing, many competitors use this material successfully for sprint and short distance races also. RS29 has also found favor in the growing track day market due to the level of control, good cold performance, long life and low disc wear. Pagid RSL 1 Compound Used in GT cars, touring cars and prototype endurance racing. Due to the high friction and good modulation, often used in sprint races as well. RSL 1 is a low metallic resin bonded material containing steel and aramid fibers with very high heat resistance. It maintains a constant friction level over a wide range of temperatures. Its reduced wear rate and disc friendliness make this material appropriate for endurance races. Pagid RST 1 Compound Used in Rally tarmac, GT cars and touring cars circuit racing (sprint), high down-force formula cars, NASCAR. Suitable for applications in heavy cars and where high torque is necessary against small diameter rotors. RST 1 has a very high friction level and high temperature resistance. It is a semi-metallic resin bonded material containing steel fibers. Cold friction and initial bite makes this material most appropriate for Rally and NASCAR applications. Pagid RST 3 Compound: RST 3 is a medium-high friction metal-ceramic compound containing steel fibers and is therefore the perfect complement of the RST product family. It captivates by its low heat conductivity. Rally tarmac and gravel, GT cars, touring cars and prototype circuit racing, formula cars and club racing. Wide range of applications due to it‘s combination of bite, friction and controllability. Pagid RST 4 Compound: RST 4 is a semi-metallic resin bonded material containing steel fibers. This material has a medium friction level and high temperature resistance. Typically use is in formula cars and open wheel racing. It is also very popular as a rear-axle material for rally racing (tarmac and gravel) and for front engine cars. Also used in NASCAR on long ovals.

Girodisc Brake Pad Spreader The Right Tool for the Job This indispensable tool is used by race teams, shops, and enthusiasts alike who have high performance four- and six-piston calipers. The Girodisc Brake Pad Spreader is designed to easily spread brake pads and pistons 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 fully and evenly into their bores with one squeeze of the levers. The Girodisc Brake Pad Spreader was designed to be used with popular racing brake calipers from Brembo, AP Racing, Alcon, and other performance calipers in racing and road use. To help it fit into any caliper, the amount of throw is adjustable. Built Like a Tank. Works Like a Charm. Insert the spreading plates one way for wider six-piston calipers, or turn the spreader 90o and use the plate sides for four-piston calipers. The Girodisc Brake Pad Spreader is made from heavy-gauge steel, powder-coated for durability. The slider is cadmium-plated, and nylon pivot bushings ensure smooth action. It will quickly become an invaluable tool for any race team, shop, or enthusiast who changes pads and rotors frequently.

Pagid Racing Brake Pad Shape No. 1587 Fits the Following Vehicles: Make Model Build (Year) Front Rear KTM X-Bow 2008 + X Mitsubishi Lancer Evo V - Evo IX 1998 - 2006 X Nissan 350Z Coupe Track 2002 - 08 X Subaru WRX STI 3rd & 4th Gen 2003 - 16 X Pagid Racing Brake Pads are engineered for high-performance driving, delivering exceptional stopping power, durability, and control under the most demanding conditions. Trusted by professional racers and performance enthusiasts worldwide, these pads are crafted using advanced friction materials and cutting-edge technology to ensure consistent performance, low fade, and excellent modulation. Whether you're on the track or tackling aggressive street driving, Pagid Racing Brake Pads provide the reliability and confidence you need to push your vehicle to its limits. Pagid Racing Brake compounds are for steel (cast iron) rotors only unless otherwise noted. RS 14 Compound: The Pagid RS 14 (Black) is a high friction value ceramic compound with very good modulation and high fade resistance. A very popular, aggressive pad with strong initial bite and high torque. In addition to the track-day environment, RS14 has shown success in short- to medium-distance circuit racing as well as gravel and tarmac rallying. RSL 29 Compound: The Pagid RSL 29 (Yellow) is the world-leading endurance brake pad used by most of the winning teams in motorsport. Although designed primarily for endurance racing, many competitors use this material successfully for sprint and short distance races also. RS29 has also found favor in the growing track day market due to the level of control, good cold performance, long life and low disc wear. RS 42 Compound: RS 42 is a low metallic resin bonded material containing steel and aramid fibers. The characteristics make this material appropriate for small formula cars. Pagid RS 42 is regarded as a classic rally racing brake pad compound, as well as being very popular in small formula and touring cars. Pagid RST 3 Compound: RST 3 is a medium-high friction metal-ceramic compound containing steel fibers and is therefore the perfect complement of the RST product family. It captivates by its low heat conductivity. Rally tarmac and gravel, GT cars, touring cars and prototype circuit racing, formula cars and club racing. Wide range of applications due to it‘s combination of bite, friction and controllability. Pagid RST 4 Compound: RST 4 is a semi-metallic resin bonded material containing steel fibers. This material has a medium friction level and high temperature resistance. Typically use is in formula cars and open wheel racing. It is also very popular as a rear-axle material for rally racing (tarmac and gravel) and for front engine cars. Also used in NASCAR on long ovals.

Girodisc MP-0961 Rear Magic Pads Fits the Following Vehicles: Mitsubishi Evo 6/7/8/9 (1999-2007) Subaru WRX STI (2004-17) Girodisc "Magic Pads" are the solution to your squeaky, dusty, expensive factory replacement pads. They have lower dust than typical factory pads and much less than other performance pads. You won't be cleaning your wheels nearly as often! Additionally, they have great initial bite, something most less-expensive pads lack. But the real reason people like Magic Pads so much is they are the "silver bullet" to brake noise problems. Magic Pads are a semi-metallic composition that is easy on rotors and on your wallet. We recommend always replacing pads as a whole car set when switching compounds. All Magic Pads come with anti-noise shields pre-installed and included in the price. If you have any questions, give us a call at (844) 438-7244. We're happy to help!

CMS Performance RF1 DOT4 Racing Brake Fluid Real Life 622º 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 622º F / 328º C, RF1 exceeds all DOT 3 & DOT 4 requirements and is compatible with all DOT 3, DOT 4, and DOT 5.1 fluids. Note: RF1, like all DOT 4 brake fluids, is not compatible with DOT 5 silicone-based or any mineral-based brake fluids. On the race track, there is perhaps no single safety system more important than your brakes. No single part of that system is more critical than brake fluid, given the extraordinarily high temperatures it operates under. 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. We found more than a few brands whose product was all hype and not high performance. No Hype. All Performance. No Kidding. So we did something about it. CMS Performance RF1 is manufactured in partnership with Orthene, maker of the also-excellent Halo P1 racing brake fluid and a brake fluid supplier to many racing teams in Formula 1, WEC, and other professional series. RF1 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 a lot more on brake fluid, but it's hard to find higher-performance than RF1 Racing Brake Fluid. CMS Performance RF1 Racing Brake Fluid Details: Manufacturer: CMS Performance Manufacturer part no.: CMSRF1 Typical dry boiling point: 622º F / 328º C Typical wet boiling point: 399º F / 204º C Exceeds DOT 3 & DOT 4 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!