Support your high-displacement big bore build with the premium NCY 62mm Engine Gasket Set. Precision-engineered for GY6 and Genuine 125cc-170cc engine architectures running an upgraded 62mm cylinder kit, this comprehensive kit ensures a flawless, leak-free seal across your top and bottom end under high-compression conditions.
This gasket set is engineered specifically for vehicles upgraded with 62mm big bore configurations (typically yielding 171cc�180cc). Review target platforms below:
? BIG BORE FITMENT NOTE: This is a high-performance 62mm oversized gasket set. It will not seal properly on stock 125cc (52.4mm) or stock 150cc (57.4mm) cylinders. Please verify your cylinder bore diameter before purchasing.
Mechanic's Installation Tip: When performing a big bore install, ensure all mating surfaces on the crankcase and cylinder head are perfectly clean and free of old gasket residue. Use a plastic scraper or a brass brush to protect the soft aluminum cases from scoring. Always torque your cylinder head nuts in a star pattern to factory cross-specifications in multiple stages to guarantee an even crush seal across the head gasket.
California Proposition 65 Warning
