Zipper’s Stage 3 Muscle Kit for 2024–Up Milwaukee-Eight® Gen 2 Center-Cooled Models

The Stage 3 Muscle Kit is Zipper’s most popular performance kit for Milwaukee-Eight® engines! Make over 150 ft-lbs and 165 HP that’s reliable and POWERFUL AT ANY RPM.  Developed for the experienced rider who wants Performance, Reliability and the widest power curve in its class!

The Stage 3 Muscle kit paired with Zipper’s Stage 3 Center cooled heads, Red Shift 552 camshaft, and 4.250 cylinder kit that results in big power across the entire RPM range. HUGE torque as soon as you open the throttle, and carries it across the RPM range to provide instant acceleration from any RPM. Compression is set to a relatively modest 11.5:1. It has an amazing sound at idle and under load!

The key to this great power is the carefully engineered combination of airflow, unique Red Shift camshaft PROFILES, added compression, displacement and Zipper’s legendary commitment to testing and manufacturing detail. The Components are produced at the Zipper’s facility so you can be assured of the highest quality with reliable results! Tire life not guaranteed!

If you have additional questions about compression, other Red Shift Grinds or other special needs before you order contact our engine experts at Click here, for Zipper’s Support

Note- This kit requires your cylinder head cores for processing CNC Heads

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.

Zipper’s is here to help, if you have a question(s) please use form below or Click here, Zipper’s Support. We will review your question(s) and we will be in contact.