Porterfield Brake Shoes for 1989 GMC K1500 4WD 10" R/Shoe Ext Cab Std Ch Compound:R4-S Flexible Boost Control: Control boost

Flexible Boost Control: Control boost by gear to maximize traction and optimize launches

Lightweight build: Breathable polyester-mesh upper helps keep hands cool and dry

Corsa 07-10 GMC Sierra 6

Line up with your existing holes and bolt down

2L with the STRATEC Performance Exhaust Manifold Headers

Porterfield Brake Shoes for 1989 GMC K1500 4WD 10" R/Shoe Ext Cab Std Ch Compound:R4-S Flexible Boost Control: Control boostPorterfield Brake Shoes for 1989 GMC K1500 4WD 10" R Shoe Ext Cab Std Ch 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