Give your Twin Cam© 88 engine a major workout with our Muscle 95” Kit!

Smooth, linear power is extracted from the TC88 with the installation of Zipper’s 95” EFI 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. Kits for Carbureted bikes include a mapped ignition module and your choice of a ThunderJet equipped S&S ‘G’ or Mikuni 45mm carburetor. All kits are available with gear drive cams if desired. Twist the grip on your Twin Cam‚ and Unleash the Power – It’s a blast to ride!

This kit uses your factory head and cylinder cores sent in for modification, expect 1-2 weeks completion time. We keep exchange heads and cylinders in stock already modified for quicker turn-around; parts must be in nearly perfect cosmetic condition, expect the same from us. You can also purchase heads and cylinders outright (without supplying a core set). We will supply clean, reconditioned factory castings for your application – add part # 517-010 (cylinders) and 517-015 (heads) to your order.

All kits can be purchased whole or in any combination of desired components, please contact our sales department at 410-579-2828 for more details and pricing.



Not legal for sale or use in California on any pollution controlled motor vehicle.

Not legal for sale or use on any EPA pollution controlled motor vehicle.

*To ensure you enjoy a premium experience, Please fill out a Build Sheet/Job Order Sheet prior to completing an order on the website.
Click here for Zipper’s Build Sheet/Job Order Sheet

Weight 1 lbs
Emissions Compliant

Country of Origin

Engine Type


Fuel / Air


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