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Koso North America-Big Bore Cylinder Kit-170cc-13-20 Honda Grom & 19-21 Monkey
Does not fit 2022+ models. Want to unleash all the power your Honda Grom® can handle? Our 170cc Big Bore kit is the perfect addition for you!
The kit includes a ceramic coated cylinder, 61 mm forged piston, rings, pin, gasket kit and banjo bolts. Its compression ratio of 11.5 to 1 will allow you to still use premium pump gas and keep the reliability of a stock motor. Made from the best components available on the market, our 170cc big bore kit will amaze you! 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. Piston, rings, pin, pin clips, gasket kit, banjo bolts and cylinder. Discontinued product, for reference only.