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This 67mm big bore kit is largest big bore kit on the market. This big bore kit will not fit regular GY6 engine with the standard 54mm cylinder stud spacing and requires a special engine casing with a 57mm cylinder stud spacing also used to build the 232cc engines.
Kit includes:
- 67mm Ceramic Cylinder kit
- 67mm piston kit with rings
- 67mm cylinder head with large valves (30.5mm / 26.5mm)
- 57mm engine casing
- 57mm Rocker assembly
- New cylinder / head studs
- High Performance Camshaft
- Gasket set
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