Pay in 4 interest-free payments of $462.49 Learn more
Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
Designed to be stronger than stock
Constructed using billet aluminum
4-1/8" x 4-1/8" bore and stroke
carburetor or air cleaner
ZIPPERS PERFORMANCE THUNDERSPORT CYLINDER HEADS HARLEY M8 GEN 2 HEAD OPTION:STAGE 2 Designed to be stronger thanZIPPERS PERFORMANCE THUNDERSPORT CYLINDER HEADS HARLEY M8 GEN 2 SELECT LEVEL OF HEADWORK IN OPTIONS THESE ARE AN EXCHANGE ITEM STAGE 2 Zippers Gen2 Stage 2 head upgrade begins with an inspection of the cylinder head as received; seats, guides and valves are all inspected for unusual wear or issues. After the inspection is completed, the valves and seats are professionally machined and blended to provide maximum flow in an un ported head to achieve
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