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FITS: Mitsubishi Evo X front (2008-15) Thunderhill 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 your Evo X front and work flawlessly with the 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 Thunderhill RF-1 racing 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.

FITS: MITSUBISHI EVO X Thunderhill 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 system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight (8 lbs per corner) allows for quicker acceleration and suspension response. When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron which is constructed in the USA and is 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 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our 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 grade12 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 as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

FITMENT (FRONT): Ford Shelby GT500 (2007-12) Ford Mustang BOSS 302(S) Ford Mustang GT (2011-14 w/ Brembo calipers) Thunderhill 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. This Girodisc system is an upgrade to a two-piece steel rotor and aluminum hat combination as a direct replacement for the OEM brake discs. The Girodisc floating rotors will bolt directly to your Mustang and work flawlessly with OEM calipers. By upgrading your brakes with these lightweight high-performance replacements, as opposed to a big brake kit, your factory bias is maintained as well as your ABS effectiveness and efficiency. The Girodisc rotors are lighter than OEM pieces, resuutling in a reduction in rotational and unsprung weight (4 lbs per corner) allowing for quicker acceleration, stronger braking, and faster suspension response. When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid, you have the best possible solution to overheating, cracking, and warping rotors. The central hat section of the disc 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 rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

Thunderhill 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 system is an upgrade from a 365mm rotor to a 380mm 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron which is constructed in the USA and is 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 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our 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 grade12 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 as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

FITS: Audi B5 S4 & C5 A6/Allroad with Brembo '18Z' 6 Piston CaliperThese rotors only fit the B5 S4, C5 A6s and Allroads with the 2.7TT motor. This kit will not fit C5 A6s, RS6s, or Allroads with the 4.2L V8. Thunderhill 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 system is a direct replacement for the OEM brake disc. The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron which is constructed in the USA and is 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 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our 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 grade12 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 as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

FITS: Audi S4 (B5) & A6/Allroad (C5) with Alcon or Stoptech 355x32mm Big Brake KitThese rotors will fit the B5 S4 or C5 A6/Allroad with the 2.7L twin turbo motor. This kit will not fit the C5 A6, RS6, or Allroad with the 4.2L V8. Thunderhill 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 your Audi front and work flawlessly with the 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 Thunderhill RF-1 racing 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.

IPD Intake Plenum for Porsche 997.2 911 Carrera S (3.8L) Porsche’s DFI (Direct Fuel Injection) intake was a completely redesigned intake system developed to deliver improved performance, fuel consumption and lower emissions by optimizing the air fuel mixture directly inside the combustion chamber. The DFI Porsche engine package is a finely-tuned performance machine and additional power has proved difficult to find. The unique design of Porsche’s new DFI intake system posed challenging tuning hurdles but once again IPD developed a design that out-performs the factory intake system without compromising reliability and drive-ability. This innovative and revolutionary IPD DFI Intake Plenum employs the patented “Y” design as well as an enlarged plenum area that allows for improved intake air speed and velocity resulting in increased performance. The all new specifically designed IPD 3.8L DFI intake Plenum is a direct bolt-on upgrade that replaces the factory air intake distributor and utilizes all pre-existing factory hardware and throttle body. The improved IPD intake design allows for smoother, less turbulent and more efficient air flow resulting in impressive power and torque gains for Porsche driving enthusiasts. The superior design of the DFI IPD Plenum provides an additional 15 HP at the wheels. Unlike previous naturally aspirated IPD plenums that delivered stronger gains in the mid range, the new IPD DFI Plenums deliver a similar shaped power curve as the factory but is considerably stronger from the mid-RPMs to redline without any loses in power down low. Installation of the IPD 3.8L DFI Plenum is relatively straight forward and can be installed by mechanically inclined DIY customers, though IPD strongly recommends installation be performed by a trained and qualified Porsche technician.

GET IT CUSTOM POWDER-COATED TO MAKE YOUR ENGINE BAY POP! The revolutionary 997.1 Turbo/Turbo S IPD Y-pipe was built for the more demanding Porsche Turbo performance customer. This is not a cast reproduction of the factory Y-pipe but a complete re-design from scratch, developed to deliver greater air flow for both stock and highly modified Turbos. The factory Y-pipe becomes restrictive when adding substantial power gains. The IPD Y-pipe has larger inlets and an optimized diversion area allowing for even greater power gains. This superior and more efficient design flows 126 CFM higher than the factory Y-pipe, delivering the additional power needed to raise the performance bar on any Turbo. Bigger isn’t always better, and the IPD Y-pipe is designed to deliver optimum flow without being so large that it causes a loss in boost response. These Y-pipes can be custom powder coated in dozens of colors, ceramic coated, or polished to add drama to the aesthetic appeal of your Turbo engine. The IPD 997.1 Turbo/Turbo S Y-pipe is designed to be a direct replacement of the factory OEM Y-pipe. There are no modifications or fabrication required for installing the IPD Y-pipe. This is an easy and straight forward bolt on upgrade.

IPD Intake Y-Pipe for Porsche 997.2 Turbo/Turbo S The revolutionary 997.2 Turbo IPD Y-Pipe was built for the most demanding Turbo performance customer. This is not a cast reproduction of the factory Y-pipe; it is a complete re-design from scratch, developed to deliver greater air flow for both stock and highly-modified Porsche 997.2 Turbo or Turbo S engines. The factory Y-pipe becomes restrictive when adding substantial power gains, particularly when you increase boost. The IPD Y-Pipe has larger inlets and a dimpled flow-optimized diversion area, removing the restrictions of the stock pipe. This superior more efficient design flows 126 CFM more than the factory Y-pipe delivering the additional capacity needed to raise the performance bar on the 997.2 Turbos. Bigger isn't always better, and the IPD Y-Pipe is designed to deliver optimum flow without being so large as to cause a loss in boost response. The IPD 997.2 Turbo Y-Pipe is designed to be a direct replacement of the factory OEM Y-Pipe. There are no modifications or fabrication required for installing the IPD Y-Pipe. This is an easy and straight forward bolt-on upgrade.

A2-130 Girodisc 2pc Rear Brake Rotors (Audi B8 S4/S5) Thunderhill 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 system is a direct replacement for the OE disc, no modifications are necessary. The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Girodisc front rotors are approx 13.9lbs vs. 17.1lbs for the stock units. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.The rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.Once the Girodisc system is in place, simply replace the cast iron rotor when needed. Sold/Priced per pair.

Thunderhill 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. The Girodisc system is a direct replacement for the OE disc, no modifications are necessary. The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Girodisc front rotors are approx. 13.0 lbs vs. 15.3 lbs for the stock units, this reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. The central hat section of the Girodisc rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved-vane design, developed in racing to act as a centrifugal pump forcing cool air through the disc. The disc and hat have a floating mount system, which utilizes 12 high-strength alloy steel drive pins, manufactured in the US by Girodisc and cadmium plated for long-lasting corrosion resistance. These pins take the loads from braking while maintaining the axial and radial float between the hat and disc. They are secured by class 12.9 cap screws and hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise springs on the disc side, allowing the iron disc to expand as it heats up while eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the brake pads. Once the Girodisc system is in place, you simply replace the cast iron discs when needed. This reduces cost over time by allowing you to re-use the aluminum central hats. Sold/priced per pair

FITS: Ford Focus RS The Girodisc system for the Ford Focus RS is a direct replacement for the OE front discs; no modifications are necessary. The rotors will bolt directly to your car and work flawlessly with OE calipers. By upgrading your brakes with lightweight, high performance two-piece rotors, as opposed to a big brake kit, your factory brake bias is maintained as well as your ABS effectiveness and efficiency. Together with our customers, we have thousands of track miles on Girodisc rotors on every conceivable car. They are the go-to rotor for any of our track- or race-car builds.The central hat section of the Girodisc A1-169 rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's proprietary cast iron, poured in the USA and machined from start to finish in-house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc. The rotor and hat have a floating mount system, which utilizes 10 high-strength alloy steel drive pins, manufactured by Girodisc in the USA to their specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking action while maintaining the axial and radial float between the hat and disc. The pins are secured by Grade-12 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads. Once the Girodisc system is in place, simply replace the cast iron rotor ring when needed.Sold/priced per pair.

FITMENT (FRONT): Audi S3 VW Golf R Thunderhill is an authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country. We ship most Girodisc systems the same or next business day to ensure we meet your delivery deadline. The Girodisc system is a direct replacement for the OE disc. No modifications are necessary. The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.The rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by grade 12 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.Once the Girodisc system is in place, simply replace the cast iron rotor when needed. Sold/priced per pair.

CMS Performance Deluxe Bolt-In Harness Bar For C8 Corvette This Harness Bar Fits the Following Cars: 2020+ Chevrolet Corvette Stingray (C8) 2023+ Chevrolet Corvette Z06 (C8) Does not fit Convertible or Roadster Click Here For Installation Instructions The Best C8 Corvette Harness Bar in the World The C8 Corvette is an incredible, affordable track-day car that easily achieves race car performance on track. Managing that kind of performance wearing nothing but a three-point seat belt is a chore and leaves a lot to be desired in terms of safety. That's where we come in with the CMS Performance C8 Corvette Deluxe Harness Bar. Featuring the same rock-solid, high-strength design as our standard C8 Harness Bar, the Deluxe bar adds an innovative "main hoop" design, giving it a more aggressive look. This also gives you a place to mount an in-car motorsports video camera, like the AiM Sports SmartyCam GP HD. Of course, it provides high-strength mounting points for your harness shoulder straps to keep you firmly and safely in your seat. The C8 Deluxe Harness Bar is the strongest, most elegantly designed C8 harness bar on the market. It seamlessly integrates into your C8 interior, preserves your rear view, and gives the C8 a big bump in cool factor, especially with a custom powder-coat color! The CMS C8 Deluxe Harness Bar allows full seat travel while locating your harness shoulder belts at the proper height for maximum on-track safety and security. Installation requires no drilling or other modification of the chassis, and no modification of your upper center console trim. Some modification of your B-pillar lock/seat belt trim panels is required. We offer precision pre-cut panels to ease installation and save your originals if you need to put your C8 back to stock. Corvette C8 Deluxe Harness Bar is Made in the USA Every CMS C8 Deluxe Harness Bar is handcrafted in America by master fabricators for a perfect fit, beautifully 360o TIG welded for high strength, and fully powder-coated in our facility for a brilliant, durable finish. And there's no extra charge for custom colors. CMS operates a complete powder-coating facility to offer you color-matched Corvette factory colors, giving your C8 a customized look that will last. CNC mandrel bent and fully TIG welded from premium Docol R8 Advanced High-Strength Steel (stronger than 4130 CrMo or DOM) and finished in rich powder-coat. Complete, detailed instructions make installation pretty simple (figure about an hour if you're reasonably handy). Add The Best Harnesses For The C8 Corvette Add optional four-point Sabelt Silver Series or Schroth Profi II ASM four-point harnesses along with the CMS Performance Harness Install Kit, and your C8 Corvette is ready to hit the track with significantly upgraded driver and passenger safety. These harnesses were specifically designed for use in street cars with no sub strap pass-through in the seat. CMS Performance C8 Corvette Deluxe Harness Bar Details: Materials: 1.50″ x .095" Docol R8 Advanced High-Strength Steel for superior safety Construction: Full 360o TIG welding for ultimate strength, integrity, and beauty Finish: Custom-color powder coating in any color you can imagine Weight: 24 lbs. (10.9 kg) Features: Unobstructed rear view; designed, built, and finished in the USA, allows full seat travel with any seat Comes with all necessary hardware This product is intended for off-road, race track use only.

Thunderhill 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. The Girodisc system is a direct replacement for the OE disc. No modifications are necessary. The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. These Girodisc rear rotors are approx 18.8 lbs. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. The central hat section of the Girodisc rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved-vane design, developed in racing to act as a centrifugal pump forcing cool air through the disc. The disc and hat have a floating mount system, which utilizes 12 high-strength alloy steel drive pins, manufactured in the US by Girodisc and cadmium plated for long-lasting corrosion resistance. These pins take the loads from braking while maintaining the axial and radial float between the hat and disc. They are secured by class 12.9 cap screws and hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise springs on the disc side, allowing the iron disc to expand as it heats up while eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the brake pads. Once the Girodisc system is in place, you simply replace the cast iron discs when needed. This reduces cost over time by allowing you to re-use the aluminum central hats. Sold/priced per pair