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2022 Honda Grom 4 Valve Cylinder Head Big Bore Kit 140cc
Complete 4v head and big bore kit for 2022+ Grom 140cc. 3 packages available 2 have black valve covers. And one has the OEM style Honda silver cover. Please note this is an aftermarket part that may require additional modifications to fit. May need to shorten head studs to fit valve cover.
May need longer cam chain / adjustments to chain tensioner to fit. A larger throttle body and intake elbow is highly recommended/ required. Aftermarket ecu for tuning is required. Custom 4v head with big valves. 53mm piston flycut for 4v. Piston rings please check ring gap before installing.