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.
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.
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
