DynoMax Header-Back Exhaust Pipe Kit - 2-1/4 in Pipe Diameter - GM Fullsize Truck 1973-87 89004 10253C Boost Control

Boost Control

Retain Stock Compression Ratio

Flange Stackable

Requires use of hardened Wilwood slide pins (sold separately)

DynoMax Header-Back Exhaust Pipe Kit - 2-1/4 in Pipe Diameter - GM Fullsize Truck 1973-87 89004 10253C Boost ControlDynoMax Header Dual Kit 89004 2. 25 in. Tube Size Includes Reducers Exhaust Pipes 16 Ga. Tail Pipe w Side Exits Hardware Does Not Includes Mufflers Designed To Perform w DynoMax Headers Or Stock Man Special Design For A Variety Of Mounting Options Extra Long 16 gauge Tailpipe Give your vintage vehicle's exhaust system an upgrade with a DynoMax dual header kit. Designed to attach to headers, it features a special reducer that allows for a variety of