ZIPPERS PERFORMANCE TWIN CAM SLEEPER 107" KITS HARLEY MODELS 07-17

ZIPPERS PERFORMANCE TWIN CAM SLEEPER 107" KITS HARLEY MODELS 07-17

EXCHANGE KITS - CORES REQUIRED 

Twin Cam® ’07-’17 Sleeper 107 Kit

The Sleeper 107 kit is an easy and affordable upgrade for 2007-up 96 or 103” Twin Cam® engines. Your cylinders are precision-bored from 3.750” (96”) or 3.875” (103”) to 3.937” to boost displacement to 107”, while your stock cams are replaced with our Red Shift 528 grind. The forged flat-top pistons used boost compression to 10.25:1, while the 528 cams yield impressive power and torque gains across the entire RPM range with stock heads. Gain even more power with (1) our optional Stage 1 headwork and (2) improve longevity with critical oil system blueprinting by adding our cam chest upgrade that includes our billet cam plate, dual-piston cam tensioners, full-compliment cam bearings and Feuling lifters.

With power peaking at 5,000 RPM, this kit is a great choice for the rider who rarely pegs the throttle to red line, but rather enjoys the super-strong pull of low and mid-range torque! This kit uses your factory cylinder cores sent in for modification. An exchange may be possible once your cores are cleaned, inspected and qualified for exchange.
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.