Looking for a trusted source for your performance cylinder head work? For 37 years , Zipper’s Performance has been known for reliable, high quality performance components, and its headwork has always been considered top notch. Over the last several years, “we have made investments in technology and equipment that has allowed us to lower cost and improve turnaround time on our best selling ported heads. Our average turn time on CNC heads using your castings is 1-2 weeks; this is even faster if your cores qualify for our exchange program. All heads are sold complete with top quality valves, guides, springs and seals installed.
Most Popular – Stage 2 & 3 Twin Cam®. Stage 2 porting promotes the strongest low and mid-range torque through its high velocity design and is recommended for bikes using torque-emphasis cams
MSRP $799.95 a set. Stage 3 includes more extensive porting and CNC combustion chamber machining to un-shroud the valves for a wider power range with more high RPM power.
