Yellow Speed Racing Rear 6 Piston Ultra Big Brake Kit - Audi S4 2004-2005 (B6) Rotor Size:356mm x 28mm The Premium Competition coilovers feature

The Premium Competition coilovers feature stiffer spring rates than our Dynamic Pro Sport coilovers

*IN STOCK & READY TO SHIP

Vacuum-Operated Valves: Switch seamlessly between subdued refinement and full-throttle aggression

True Coilover models equipped with 16k R spring rate True Coilover option will require trimming of vehicle body for installation

Constructed from aerospace-grade Grade 5 titanium

Yellow Speed Racing Rear 6 Piston Ultra Big Brake Kit - Audi S4 2004-2005 (B6) Rotor Size:356mm x 28mm The Premium Competition coilovers featureYellow 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