Yellow Speed Racing Rear 4 Piston Ultra Big Brake Kit - BMW 6 Series 2004-2010 (E63) Caliper Model:YSCPR4a Whether you keep your exhaust

Whether you keep your exhaust otherwise stock or pair it with free-flow components

reminiscent of Porsche’s legendary 917 race cars ripping down the straights

Fully mandrel-bent for maximum efficiency and flow

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This could lead to premature wear of suspension and other components or possibly worse

Yellow Speed Racing Rear 4 Piston Ultra Big Brake Kit - BMW 6 Series 2004-2010 (E63) Caliper Model:YSCPR4a Whether you keep your exhaustYellow 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