Porterfield Brake Pads for 2017 BMW 540i Compound:R4-S Retainers 4860-100 The older style

Retainers 4860-100 The older style standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today

CJ 1975 - 1978 Mercury Grand Marquis Base 1963 - 1970 Mercury Marauder Base 1969 - 1970 Mercury Marauder X-100 1967 - 1978 Mercury Marquis Base 1969 - 1978 Mercury Marquis Brougham 1975 - 1976 Mercury Marquis Colony Park 1961 Mercury Meteor 600

- Charge Pipe Material: Aluminum

*Requires ARC delete for models equipped with ARC (Adaptive Ride Control also know as MagneRide)

Base 1980 - 1982 Pontiac Phoenix LJ

Porterfield Brake Pads for 2017 BMW 540i Compound:R4-S Retainers 4860-100 The older stylePorterfield Brake Pads for 2017 BMW 540i 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