The HPA Downpipes optimize back pressure and allow our calibrators the headroom to maximize both power and torque.
HPA street downpipes come standard with our 100C high flow cats, the same cats used on all HPA twin turbo vehicles.
- Factory 02 sensor placement
- Bolts to factory locations, with adapter step down included for factory rear muffler section
- Substantial weight savings
A race (catless) version of this downpipe is also available upon request.
Key Design Elements:
Wheel Fitment: Unlike most Big Brake Kits, the HPA system is designed to fit behind the OEM 18" wheels without any spacers. Note: Factory dust shield must be removed to accommodate larger rotor.
Weight Savings: These kits shave 6 pounds of rotational mass per rotor, which results in improved acceleration and deceleration, and a total of 32 pounds of un-sprung weight for improved suspension function.
Calipers: CNC machined from billet aluminum, the fixed calipers are designed to increase rigidity, improve braking efficiency, and improve pedal feel. Featuring internal crossover pipes, these calipers have a sleek streamlined look with no fragile external components. Pistons are sized to HPA specification with exact piston bore for perfect front and rear balance. Piston seals protect from dust, weather, and pressure to meet DOT spec.
Rotors: Two piece floating rotor with directional curved vanes, and HPA curved slots. Hats are anodized CNC machined aluminum, and discs are zinc-plated for corrosion protection.
Pads: The ceramic compound pads included with the kit are suitable for street and mild track use. They create minimal brake dust and are relatively quiet. Sharing the same profile as Corvette C5/C6, there are many different replacement options available on the open market. Note: the OEM pad wear sensors are eliminated.