Koso North America 150CC Big Bore Kit. This item fits the following models. Includes a ceramic coated cylinder, 61mm forged piston, rings, pin, pin clips, gasket kit, and banjo bolts. Compression ratio of 11.5 to 1 allows the use of premium pump gas to keep the reliability of the stock motor.
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.