NCY 62mm Engine Gasket Set | GY6 & Genuine 150cc

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. Key Features Precision Bore Matching: Features a true 62mm inner diameter, ensuring zero gasket overhang into the combustion chamber to prevent hot spots and detonation. High-Thermal Resilience: Manufactured from premium composite and metal materials designed to withstand increased combustion temperatures and crankcase pressures. Complete Rebuild Suite: Includes essential case, head, base, and tensioner gaskets needed for a complete top-to-bottom engine teardown and overhaul. Vehicle & Engine Compatibility Matrix This gasket set is engineered specifically for vehicles upgraded with 62mm big bore configurations (typically yielding 171cc–180cc). Review target platforms below: Engine Family / Brand Eligible Model Lines (Requires 62mm Big Bore Upgrades) GY6 4-Stroke Platforms Standard 125cc and 150cc QMI152, QMJ152, QMI157, and QMJ157 engine configurations. Genuine Scooter Co. Buddy 125, Buddy 150, Buddy 170i, Blur 150, and Psycho 150. Chinese GY6 Generics Fits wide-ranging 150cc platforms from TaoTao, Icebear, Wolf, Jonway, and ZNEN. ? 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. Technical Specifications Target Cylinder Bore: 62mm Engine Configuration: 4-Stroke Air-Cooled / Fuel-Injected Manufacturer Part Number (MPN): 624C06GY662LL Vendor: NCY Performance 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