Porterfield Brake Pads for 2006 GMC ENVOY Competition Motorsport This makes for a solid

This makes for a solid and more direct connection that allows the rear-end to remain rigid and firm under stress

Direct replacement that bolts to factory mounting points without modification

Powered glass adjustment — Control mirror angle from the cab

Long tube design - Maximizes scavenging and reduces backpressure compared to factory manifolds

Porterfield Brake Pads for 2006 GMC ENVOY Competition Motorsport This makes for a solidPorterfield Brake Pads for 2006 GMC ENVOY 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