Porterfield Brake Pads for 2007 BMW 645Ci Compound:R-4 After the addition of the

After the addition of the Co-Pilot' transmission system

Cable Management System: Features hidden "Chase" holes for tidy

and radiator cross-member

Left Aeromotive AN-08 Shutoff Valve - Left

Porterfield Brake Pads for 2007 BMW 645Ci Compound:R-4 After the addition of thePorterfield Brake Pads for 2007 BMW 645Ci Porterfield R4 Porterfield R4 Carbon Kevlar based brake pads were fully designed for heavy duty extreme motorsports use. Its one of the the few true motorsports competition pads available on the market today. The carbon based semi metallic R4 brake material allows the brake pad to absorb huge amounts of heat and dissipate it quickly and evenly over time. The Carbon Kevlar material also allows the brake pad to