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TTMRC 232cc Big Bore Kit and 4V Cygnus Style Head for GY6 Engines
This complete power kit comes with a 67mm cylinder kit and matching crankcase. This means there is no machining of the crankcase required! The crankcase is also pre-drilled and tapped for an oil cooler, which is a necessity on street ridden bikes. An oil block off fitting is included for race bikes.
Includes the following:
Please Note: This kit is for experienced users only. Modifications may be required to ensure the engine will function properly. The cases need to be relieved when using the +8.2mm crankshaft or there may be interference with the piston. Stacking multiple base (cylinder) gaskets will help to make compression levels more manageable.