Koso GROM BIG BORE KIT BLACK (2022+)
Koso GROM BIG BORE KIT BLACK (2022+) by Koso.
*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 Download PDF When using 150cc big bore kit only, customer must change or add the following parts: Parts Description Mandatory Suggested DB016120 High flow injector | Honda GROM and MONKEY 2022+ X KU640000 Ignition coil | Honda GROM and MONKEY 2022+ X DK640000 Racing air filter for GROM 2022+ only X DL640000 Racing air filter cover and rubber intake for GROM 2022+ only X DM640000 Connecting tube for GROM 2022+ only X DP640000 Intake Manifold | Honda GROM and MONKEY 2022+ X DY640000 28mm Throttle body | Honda GROM and MONKEY 2022+ X NF640000 High flow oil pump | Honda GROM 2022+ X MM640000 Camshaft | Honda GROM and MONKEY 2022+ X ECU Modification if the stock injector is used X Proper exhaust system must be used to prevent re-flow pressure and heat X