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Finish: Black (OEM-spec)
Their big bore kits are a go-to upgrade for riders and shops looking for reliable
Replacement piston ring set for your 72cc kit
NCY PTFE-coated star vented racing clutch bell
Essential for Visibility: Keeping your speedometer functional is crucial for monitoring your speed and tracking your maintenance intervals accurately
Koso 170cc 61mm Big Bore Kit - Honda Grom & Monkey (2014-2020) 36 piece Finish: Black (OEM-spec)Want to unleash all the power your Honda Grom can handle? Koso's 170cc Big Bore Kit (MB623002) is the perfect addition for you! The kit includes a ceramic coated cylinder, 61mm 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, Koso's 170cc big bore kit will amaze you!
