Zippers Muscle 103 Kit

Give Your TC 96″ a Major Workout with Our Muscle 103″ Engine Package!

Smooth, linear power is extracted from the Twin Cam® with the installation of Zipper’s Muscle 103″ engine kit. This complete performance package includes precision cylinder boring, forged big bore pistons, Zipper’s CNC ported heads with oversize valves, Red Shift cams, adjustable pushrods, and all gaskets. Includes the ThunderMax® ECM with AutoTune, ThunderMax 54mm throttle body, high flow injectors and high flow air cleaner assembly.

Everything you need all in a single part number – we’ve done all the engineering for you!

These kits are available from any Zipper’s Performance Products dealer, or you can send your carefully packed heads and cylinders directly to Zipper’s. We keep exchange heads and cylinders in stock already modified for super quick turnaround. Parts must be in nearly perfect cosmetic condition; expect the same from us. Previously modified heads are not eligible for exchange. Need a Dealer? Need an Installer? Contact Us – We’ll be glad to help!