Includes a ceramic coated cylinder, 61mm forged piston, rings, pin, pin clips, gasket kit, and banjo boltsCompression ratio of 11.5 to 1 allows the use of premium pump gas to keep the reliability of the stock motor

Unleash all the power your Honda GROM can handle with the Koso 170cc Big Bore kit.Ceramic coated aluminum cylinder61mm bore, 11.5:1 compression ratio forged piston/ring kit (premium fuel required)Top end gasket kit and banjo boltsNot legal for use in...

Black rubber fuel hose with five layer extrusionSuitable for use with carbureted and fuel injected applications (up to 100 psi)SAE J30R9 compliantMeets CARB spec EO#C-U-07-017 and EPA 1051.110Made in the USA

Black rubber fuel hose with five layer extrusionSuitable for use with carbureted and fuel injected applications (up to 100 psi)SAE J30R9 compliantMeets CARB spec EO#C-U-07-017 and EPA 1051.110Made in the USA

Black rubber fuel hose with five layer extrusionSuitable for use with carbureted and fuel injected applications (up to 100 psi)SAE J30R9 compliantMeets CARB spec EO#C-U-07-017 and EPA 1051.110Made in the USA