*Fits 2022+ models
Made from the best components available on the market, our 150cc Big Bore kit for Honda Grom® and Monkey® 2022+ is the perfect addition to upgrade your performance! The kit includes a black powder coated cylinder, 54 mm forged piston, rings, pin and gasket kit. Its compression ratio of 11.38 to 1 will allow you to still use premium pump gas and keep the reliability of a stock motor.
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
- Cylinder displacement: 150 cc
- Cylinder material: Aluminum / Black powder coated
- Piston size: 54 mm
- Piston type: Forged
- Compression ratio: 11.38:1
- Kit includes: piston ring, piston, pin, gasket kit and cylinder
- fits Grom® & Monkey® 2022+
Instructions
When using 150cc big bore kit only, customer must change or add the following parts:
Parts
Description
Mandatory
Suggested
ECU Modification if the stock injector is used
X
Proper exhaust system must be used to prevent re-flow pressure and heat
X
