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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 RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. 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. 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.

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.

REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. 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. These 380mm 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. These rings will not work with factory center hats. They are designed to work with Girodisc hats only. 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. 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. These 390mm 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. These rings will not work with factory center hats. They are designed to work with Girodisc hats only. 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.

Sparco Rev Racing Seat IDEAL FOR SMALLER COCKPITS The Sparco Rev is a light-weight competition seat is that offers performance, safety and styling. Evolved from the Evo seat, the Rev is designed for the smaller driver. Constructed with a special non-slip fabric in the shoulder and cushion, the Rev features silver harness slots and signature Sparco embroidery. The Sparco Rev is FIA approved. FEATURES Specifically designed for the smaller driver Ultra-light fiberglass composite shell Re-proportioned seat design provides excellent ergonomics Hans device compatible Fire retardant fabric Special non-slip fabric FIA approved DIMENSIONS

Sparco QRT-R Racing Seat The QRT-R is the first seat to feature Sparco’s patented QRT ultra-light technology. This QRT Technology gives an unparalleled mechanical strength/weight ratio for fiberglass composite racing seats. QRT Technology gives weight savings of 7 lbs to 10 lbs per shell. The main benefit is that QRT-R seat approaches the weight of a carbon fiber seat at a price of a fiberglass seat. The QRT-R is the lightest "Medium/Large" size fiberglass seat, the shell alone weighs only 9.9 lbs (or 15 lbs fully trimmed). The QRT-R has a unique CAD design that features a lower seating position that can fit a larger/taller driver with the exterior dimensions that can fit into smaller vehicles. The QRT-R is FIA approved. Availble in cloth. REQUIRES QRT SIDE MOUNT #600QRT FOR PROPER MOUNTING TECHNOLOGY Lightest "Medium/Large" size fiberglass seat on the market Lower seating position that can fit taller/larger drivers Smaller outer dimensions for small vehicle fitment QRT Technology gives an average weight savings of 7lbs per shell FIA approved DIMENSIONS

Sparco EVO QRT Racing Seats The EVO QRT competition seat has been redesigned with new improved updates. The EVO QRT is now made with all-new QRT Technology which results in an ultra-light shell. The EVO QRT has been updated from the previous EVO seat with a reduced shoulder bolster dimension that allows fitment into smaller cockpits but can still accommodate a medium size driver. Also the shoulder harness belt openings have been raised to accommodate a taller driver. The EVO QRT series of seats feature the most back angle rake of all Sparco seats for a very comfortable driving position. Available in cloth or vinyl. The EVO QRT is FIA approved. SIZING The Sparco EVO series is among the most versatile competition seats we carry, available in the following four sizes to ensure proper fitment: EVO S – Small (up to 32” waist) EVO – Medium (up to 34” waist) EVO L – Large (up to 36” waist) EVO XL – Extra Large (38” waist) WHAT IS QRT? Designed and developed at the Sparco OEM Composite Laboratory in Italy, QRT is a patented state-of-the-art technical process, based on aerospace technologies. QRT creates an unparalleled mechanical strength to weight ratio. This innovative production method generates the lightest fiberglass composite seat shells currently on the market; in fact, it guarantees a reduction in total weight of up to 30% compared to traditional production methods. The QRT seats approach the weight of a comparable carbon fiber seat at a lower price point. TECHNOLOGY QRT Ultralight fiberglass composite shell Excellent fitment into small cockpits 4 Sizes: Small through XL Excellent ergonomics Fire retardant fabric Special non-slip fabric FIA approved DIMENSIONS EVO S Dimesions: EVO Std Dimesions: EVO L / XL Dimesions:

Sparco Pro 2000 QRT Racing Seat The Pro 2000 QRT is an evolution of Sparco's iconic Pro 2000 seat. The Pro 2000 QRT has been upgraded with new ergonomics and technology. It is designed for a medium size driver with a waist size up to 34 inches. The Pro 2000 QRT is our deepest bolstered seat that gives excellent lateral support. It also features removable/adjustable lumbar cushions and non-slip fabric on the shoulder and bottom cushion areas for improved seat comfort. The Pro 2000 QRT is made with all-new QRT Technology which results in an ultra-light shell. The shoulder harness openings have been raised and the seat area around the mid-section has been reshaped for less interference when compared to the original Pro 2000. The Pro 2000 QRT is FIA approved. WHAT IS QRT? Designed and developed at the Sparco OEM Composite Laboratory in Italy, QRT is a patented state-of-the-art technical process, based on aerospace technologies. QRT creates an unparalleled mechanical strength-to-weight ratio. This innovative production method generates the lightest fiberglass composite seat shells currently on the market; in fact, it guarantees a reduction in total weight of up to 30% compared to traditional production methods. The QRT seats approach the weight of a comparable carbon fiber seat at a lower price point. TECHNOLOGY QRT ultra-light fiberglass composite shell Excellent fitment into small cockpits Adjustable lumbar cushions Excellent ergonomics Fire retardant fabric FIA approved DIMENSIONS

Sparco Grid Q Racing Seat The GRID Q was designed to provide the ultimate lateral support, racing ergonomics and safety. This unique design incorporates individual padding that is attached by Velcro. This padding design allows for ventilation channels. The GRID Q features a brand new shell design that has deep side bolsters and very supportive shoulder bolsters for excellent lateral hold. In addition to the unique padding and shell design, the Grid Q is now made with Sparco QRT Technology which results in an ultra-light shell. The side cushion can be removed to give more room for a larger fit. The Grid Q features harness slots that can accommodate a large range of drivers. The Grid Q is FIA approved QRT TECHNOLOGY QRT Technology gives an unparalleled mechanical strength/weight ratio for fiberglass composite racing seats. QRT Technology gives an average weight savings of 30% when compared to standard fiberglass technology. The main benefit is that QRT seats approach the weight of carbon fiber seat at the price of a fiberglass composite seat. FEATURES QRT Technology – 30% Weight savings Ultra-light fiberglass composite shell Harness slots that can accommodate a wide range of drivers Removable padding Hans device compatible Fire retardant fabric Special non-slip fabric DIMENSIONS

BBS LM Two-Piece Wheels Not all finish options may be available on all fitments and some finish options increase wheel cost. Please 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 and 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 LM has something for everyone. WHEEL WEIGHTS 17" diameter: 18.0 to 21.4 lbs. 18" diameter: 21.4 to 26.0 lbs. 19" diameter: 23.4 to 27.1 lbs. 20" diameter: 25.3 to 28.7 lbs. 21" diameter: 28.7 to 29.4 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.

FITMENT (REAR): 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. Fits Ferrari 328 GTB/ GTS 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.