Porterfield Brake Shoes for 1988 GMC K3500 4WD SRW Compound:R4-S It's designed to work with

It's designed to work with the stock Sheet-Molded Composite (SMC) bed as well as a spray-on bedliner

these designs are slightly more aggressive than the original Xtreme Energy" Hydraulic Rollers

LT 1992 - 1999 GMC C1500 Suburban SLE

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XLE Limited

Porterfield Brake Shoes for 1988 GMC K3500 4WD SRW Compound:R4-S It's designed to work withPorterfield Brake Shoes for 1988 GMC K3500 4WD SRW 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