Yellow Speed Racing Front 8 Piston Ultra Big Brake Kit - Mercedes SL Class 2003-2011 (R230) fits_2005-2008`Porsche`911 Equal-Length Mid-Section: Balances exhaust pulses

Equal-Length Mid-Section: Balances exhaust pulses for a smoother

OEM-style electronic valves

and a cabin filled with thrilling tone throughout the rev range

it may sound like a vacuum cleaner—but Valvetronic Designs is here to change that

Yellow Speed Racing Front 8 Piston Ultra Big Brake Kit - Mercedes SL Class 2003-2011 (R230) fits_2005-2008`Porsche`911 Equal-Length Mid-Section: Balances exhaust pulsesYellow 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