Yellow Speed Racing Rear 4 Piston Ultra Big Brake Kit - Audi S4 2004-2005 (B6) Caliper Model:YSCPR4a FRONT REAR SPRING RATES 6k

FRONT REAR SPRING RATES 6k 3k UPPER MOUNT Pillowball Aluminum w/ Hardened Rubber Bushings

X-Pipe Rear Section: Harmonizes pulses across banks for a cleaner

This system integrates electronically controlled exhaust valves that can be tied directly into the M8’s ECU for OEM-style operation through Sport and Sport+ modes

If you’re a Ferrari purist seeking subtlety

Radial Bearings Included on MacPherson Style Struts

Yellow Speed Racing Rear 4 Piston Ultra Big Brake Kit - Audi S4 2004-2005 (B6) Caliper Model:YSCPR4a FRONT REAR SPRING RATES 6kYellow Speed Racings Ultra Series Big Brake Kit is designed for road and track use. This big brake kit features optimum braking performance, attractive looks, easy installation and a cost effective price. Factory brakes are designed primarily for daily driving on most applications. If you have added additional horsepower to your vehicle, or frequently compete in motorsports such as circuit racing, drifting, time attack or rally racing, then a big