Koso North America 170cc Big Bore Kit MB623002

$144.60 ~~$481.99~~

Includes ceramic coated cylinder, 61mm forged piston, rings, pin, gasket kit and banjo boltsCompression ratio of 11.5 to 1Optional camshaft kit can be used with stock engine, but delivers improved results when used with 170cc Big Bore kit

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Includes ceramic coated cylinder, 61mm forged piston, rings, pin, gasket kit and banjo bolts
Compression ratio of 11.5 to 1
Optional camshaft kit can be used with stock engine, but delivers improved results when used with 170cc Big Bore kit