Discontinued product, for reference only.
*Does not fit 2022+ models
This complete top‑kit is the perfect add‑on for all horsepower enthusiast looking for performance ! It includes : a 170cc ceramic coated cylinder, forged piston, performance camshaft, bearing, rocker arms, 4 valve cylinder head, intake manifold, gaskets, and more. All parts are made from High‑quality components for reliability and durability that allow you to put your mind at ease and ride with confidence!
WARNING
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. ENGINE PARTS ARE NOT UNDER WARRANTY NOR IS COLLATERAL DAMAGE OR COST OF LABOR, IN CASES OF MALFUNCTION.
Specifications
For more important tips, notes, list of parts and other modification required, see Honda GROM® FAQ page or download our Honda GROM® Caution PDF.
Instructions
When using 170cc big bore kit and 4 valves head, customer must change or add the following parts:
Instructions
When using 170cc big bore kit and 4 valves head, customer must change or add the following parts:
* M = Mandatory | S= Suggested
