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REPLACEMENT ROTOR DISCS ONLY, DOES NOT INCLUDE ALUMINUM HAT. 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 replacement rotor system is a direct rotor disc replacement for the Giro Disc 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 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 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.

REPLACEMENT ROTOR DISC ONLY, DOES NOT INCLUDE ALUMINUM HAT.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 replacement rotor system is a direct rotor disc replacement for the Giro Disc 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 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 to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

IPD Plenum for Porsche 991.1 Turbo/Turbo S The incredible 991 Porsche Turbo received a completely redesigned exterior but the engine remained virtually identical to the previous model 997.2 Turbo. This latest Turbo is the most powerful, revolutionary and capable Porsche Turbo to ever come out of Stuttgart. This latest generation Turbo engine, titled the 9A1, delivers 520 HP (560 HP with the "S") and once again, raises the proverbial performance bar in the sports car world. The new 991 IPD Turbo Plenum is nearly identical to the previous 997.2 Turbo Plenums. The new IPD Turbo Plenum is offered in one single 74mm version which utilizes the factory 74mm throttle body. The 991 Turbo intake manifolds are smaller than the 997.1 Turbo manifolds which is great for improved boost response and gas mileage but less than ideal for making substantial power gains. The 74mm TB provides more than adequate flow for these more restrictive intake runners eliminating the need for a larger 82mm "Competition" version. The already explosive power of the 991 Turbo can be further increased with the new 991 Turbo IPD Intake Plenum. The patented IPD Plenum design works exceptionally well with all forced induction applications and the 991 Turbo is no exception. Power and torque increases provided by the IPD plenum are impressive and stay well above all factory power curves from launch to redline. Maximum power increases take place in the midrange where it's most needed, most critical and most enjoyed. The 991 Turbo plenums deliver smooth and linear power with considerably quicker boost response creating a longer and more desirable power band. The Turbo plenums deliver reliable performance for both street and motorsport applications enhancing the already visceral Porsche Turbo driving experience. The 991 Turbo requires an "adaptation" period that can be fully realized with either a series of hard pulls on the dyno or a series of spirited driving sessions, which of course IPD recommends only be performed on a closed course circuit. We recommend nstallation of all Turbo Plenums be performed by qualified and trained Porsche technicians.

IPD Plenum for Porsche 997.2 911 Carrera 3.6L 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 3.6L 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 14 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 which is considerably stronger from the mid-RPMs to redline without any loses in power down low. Installation of the IPD 3.6L DFI Plenum is relatively straight forward and can be installed by mechanically inclined DIY customers, although IPD strongly recommends installation be performed by a trained and qualified Porsche technician.

IPD Intake Plenum for Porsche 997.2 Turbo/Turbo S The incredible 997.2 Porsche Turbo and Turbo S received a completely redesigned engine with many substantial upgrades. At the time, they were the most powerful, revolutionary, and capable Porsche Turbos ever to come out of Stuttgart. The 997.2 Porsche Turbo may have been labeled a "facelift" but the engine was a major evolutionary leap forward in Porsche's coveted Turbo history. This seventh-generation Turbo engine, titled the 9A1, delivers 500 HP (530 HP in the "S") in stock trim. The 997.2 IPD Turbo plenum was considerably more difficult to design and develop than previous plenums. The good news is that all these efforts yielded a much easier installation process than previous Turbo plenums. The IPD 997.2 Turbo plenum is offered in a single version that utilizes the factory 74mm throttle body. The 997.2 Turbo intake manifolds are smaller than the 997.1 Turbo manifolds, which is great for improved boost response and gas mileage but less than ideal for making substantial power gains. The 74mm TB provides more than adequate flow for these more restrictive intake runners eliminating the need for a larger 82mm Competition version. The already explosive power of the 997.2 Turbo can be further increased with the new 997.2 Turbo IPD intake plenum. The patented IPD plenum design works exceptionally well with all forced induction applications, and the 997.2 Turbo is no exception. Power and torque increases provided by the IPD plenum are impressive and stay well above all factory power curves from launch to redline. Maximum power increases take place in the midrange where it's most needed and most enjoyed. The IPD 997.2 Turbo Plenum delivers smooth, linear power with considerably quicker boost response creating a broader, more desirable power band. The Turbo plenum gives reliable performance for both street and motorsport applications, enhancing the already visceral Porsche Turbo driving experience. Porsche's 997.2 Turbo ECU requires an adaptation period that can be fully realized with either a series of hard pulls on the dyno or a series of spirited driving sessions (which, of course, IPD recommends only be performed on a closed course circuit). Installation of all Turbo Plenums is highly recommended to be performed by qualified and trained Porsche technicians.

REPLACEMENT ROTOR DISCS ONLY, DOES NOT INCLUDE ALUMINUM HAT. FITS: McLaren 720S 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 replacement rotor system is a direct rotor disc replacement for the Giro Disc 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 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 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.

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.

Sparco Competition Driver Suit 2022 The Sparco Competition Driver Suit is the perfect balance of value and high-end features such as weight and comfort. The Competition is made from the latest generation of synthetic fire-proof fabrics which offer a soft light-weight outer and breathable inserts. The Competition features a unique elastic arm cuff not featured on any race suit. This unique cuff system allows the cuff to easily tuck into the glove gauntlet. The Competition also features pre-curved arms and legs, large rear stretch panel and a breathable inner thigh stretch panel for ultimate comfort. Technological Features of the Sparco Competition Driver Suit FIA 8856-2018 and SFI 3.2A/5 Approved Unique Arm Cuff System Pre-curved Arms and Legs Inner Thigh Stretch Panels

Sparco Competition Lady Driver Suit Finally! A women's Driver Suit that isn't only available in pink or light blue! The Sparco Competition "Lady" suit is an all-new lightweight three-layer suit specifically tailored for women. It offers superior fire protection, breathability and comfort. The Competition Lady is made from the latest generation fabrics which offer a soft lightweight outer fabric and breathable inserts at the sides and underarms. Large stretch panels and full floating sleeves for maximum comfort. It also features a light-weight zipper and collar, pre-curved arms full floating arm sleeves, hidden pockets, tone on tone stitching and the Sparco signature epaulettes. TECHNOLOGY Tailored specifically for women Lightweight three-layer construction Full-floating sleeves Pre-Curved arms and legs Ultra-soft knit cuffs Light-weight zipper Multiple stretch panels for comfort SFI 3.2A/5 FIA 8856-2018

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

Girodisc D1-220 Replacement Rotor Rings (400mm) Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc A1-220 400mm two-piece rotors, with no modifications necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. (This kit is contains two cast-iron discs and associated hardware. No aluminum center hat.) 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 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. Rotor ring-only replacement helps to minimize costs and deliver outstanding performance. Sold/priced per pair.

Cobra Suzuka Pro-Fit Racing Seat (Side Mounts Sold Separately) The Suzuka Pro-Fit Racing Seat is Cobra's best selling and most accomplished all round model. The Pro-Fit range has Cobra's unique fabric which is FIA compliant and aids driver comfort and cooling. Like all Cobra competition seats, the Suzuka Pro-Fit is available in Standard and GT width to suit the widest range of drivers. The Suzuka is known as one of the most comfortable seats in the industry. Still the preferred choice of many in all forms of motorsport, the Suzuka is an incredibly safe, deep sided and extremely rigid seat that still allows freedom of movement the race car. High backed, fully HANS/FHR compatible with increased kidney protection, but relieved below the shoulders for lateral arm movement, the Suzuka Pro-Fit allows the driver to get great leverage on the steering wheel. The Diolen/GRP constructed shell makes this seat lighter and stronger than similar Fiberglass seats. All Cobra Pro-Fit seats come standard with mid-height back and lower seat cushions and have optional ultra low or higher cushions to dial in the best possible driver comfort. Recently redesigned with higher shoulder openings to allow taller drivers to use this seat. FEATURES: HANS®/FHR compatible. PRO-FIT custom padding system. 4/5/6 point harness compatible. Breathable & cooling fabric. Deep-sided lateral protection. Dual width option: Standard or GT (+30mm). Side-mount only1 (supplied with high tensile bolts). SPECS: FIA homologated to 8855-1999. Composite Diolen®/GRP construction. Weight: 17lbs. (Standard) / 19lbs. (GT). Note 1: side mounts (pictured) are not included, available separately in the dropdown above.

BBS RS-GT Two-Piece Wheels Call and talk to a Thunderhill custom wheel specialist at (844) 438-7244. We'll make sure you get the set of wheels you've always wanted at a price no one can beat. These Forged Line Multi-Piece wheels by BBS are die-forged to offer exceptional weight savings through industry-leading FEM analysis without compromising design or build quality. Every wheel in this series includes titanium fasteners and the rim sections are machined using a patented process specifically designed to reduce weight. Available in a wide range of sizes, finishes and bolt patterns the BBS Multi-Piece Series has something for everyone. FEATURES Two-Piece Die Forged Aluminum Wheel Titanium Fasteners Rim sections machined using a BBS Patented process to reduce weight Weight optimized by FEM analysis WHEEL WEIGHTS 18" diameter: 20.0 to 24.5 lbs. 19" diameter: 20.8 to 24.4 lbs. 20" diameter: 23.0 to 24.1 lbs. PLEASE NOTE While many popular fitments are stocked and ready to ship, some fitments are made to order, increasing lead times. Check with a Thunderhill wheels specialist for a complete quote and estimated lead time. "PFS" centerbore designation means the wheel comes with the BBS Precision Fitment System. Prices and weights are per wheel.