- Big Bore Kit
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Koso North America 170cc Big Bore Kit Motorcycle Street Bike MB623002 0903-1124
Koso North America 170cc Big Bore Kit. This item fits the following models. Cylinder displacement: 169.2 cc. Cylinder material: Aluminum / Ceramic coated. Compression ratio: 11.5:1. THIS IS AN AFTERMARKET PART BUILT FOR RACING PURPOSES ONLY. KOSO IS NOT RESPONSIBLE FOR ANY DAMAGES CAUSED TO THE PARTS, VEHICLE, OR TO YOURSELF AND OTHERS.
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.
We must be notified within 24 hours of receipt of any missing, defective or damaged goods. Any item which has been used, worn, damaged or had tags/labels removed will not be eligible for return. Any damage claims may be exchanged for the identical item only.