Porterfield Brake Shoes for 1981 MAZDA RX 7 R/Drum Performance ECU Every rail ships with stainless

Every rail ships with stainless M8 mounting hardware and port plugs

Will this bolt straight onto my factory bumper without removing it

Upper mount Spherical bearing Spherical bearing Inverted/Normal type Normal Normal Damper/Spring layout Coilover Coilover Spring rate change at factory Possible Possible Damping force adjustment with wire - - Helper spring

Eliminated secondary butterflies for improved airflow and horsepower

Check the existing fastener holes before install to confirm they're clean and accessible

Porterfield Brake Shoes for 1981 MAZDA RX 7 R/Drum Performance ECU Every rail ships with stainlessPorterfield Brake Shoes for 1981 MAZDA RX 7 R Drum 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