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ZM8-HDR4 kit features ACT's most popular Heavy Duty pressure plate
1 3/4" runners and a 2
ACT Performance street Rigid-hub discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability
PPE Restonators use a premium German made packing material and all stainless construction High-flow cats are Magnaflow standard
High-flow H-pipe
BBK 11-14 Ford Mustang GT 1-3/4 Long Tube Headers w/High Flow Catted X-Pipe (304 Stainless Steel) (16337) 1532 ZM8-HDR4 kit features ACT's mostThese BBK Performance full length exhaust headers and matching high flow catted mid pipe kits offer unsurpassed value, performance, quality, and fitment. Dyno tested and built right here in the USA our products outperform the competition hands down. Every long tube exhaust header system is built with CNC mandrel bent tubing for unrestrictive exhaust flow and maximum performance. All headers include 3 8"" laser cut exhaust flanges, patented scavenging