Koso GROM 170cc BIG BORE CYLINDER KIT
Koso GROM 170cc BIG BORE CYLINDER KIT by Koso.
Discontinued product, for reference only. *Does not fit 2022+ models Want to unleash all the power your Honda Grom® can handle? Our 170cc Big Bore kit is the perfect addition for you ! The kit includes a ceramic coated cylinder, 61 mm 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, our 170cc big bore kit will amaze you ! 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. https://www.youtube.com/watch?v=pcVJlqdgays Specifications Cylinder displacement: 169 cc Cylinder material: Aluminum / Ceramic coated Piston size: 61 mm Piston type: Forged Compression ratio: 11.5:1 Kit includes: piston, rings, pin, pin clips, gasket kit, banjo bolts and cylinder fits Grom® and Monkey® For more important tips and notes, see Honda GROM® FAQ page or download our Honda GROM® Caution PDF. Instructions Download PDF When using 170cc big bore kit only, customer must change or add the following parts: Parts Description Mandatory Suggested BA003214 Mini 3 - Air/Fuel ratio meter | Honda GROM X BA003245 Mini 3 - Cylinder head temperature | Honda GROM X DB008160 High flow injector | Honda GROM X DB623000 Injector adaptor kit | Honda GROM X DK623000 Hurricane racing air filter fits GROM only X DK633000 Hurricane racing air filter fits MONKEY only X DM623000 Connecting tube | fits GROM only X DM623K10 Intake tube | fits GROM only X DY623013 34mm Throttle body | Honda GROM X NF623000 High flow oil pump | Honda GROM X MM623002 Camshaft | Honda GROM X ECU Modification X Addition of a fuel control box X Proper exhaust system must be used to prevent re-flow pressure and heat X Other Instructions Download PDF When using 170cc big bore kit only, customer must change or add the following parts: * M = Mandatory | S= Suggested Parts Description BA003214 Mini 3 - Air/Fuel ratio meter | Honda GROM S BA003245 Mini 3 - Cylinder head temperature | Honda GROM S DB008160 High flow injector | Honda GROM S DB623000 Injector adaptor kit | Honda GROM S DK623000 Hurricane racing air filter fits GROM only S DK633000 Hurricane racing air filter fits MONKEY only S DM623000 Connecting tube | fits GROM only S DM623K10 Intake tube | fits GROM only S DY623013 34mm Throttle body | Honda GROM S NF623000 High flow oil pump | Honda GROM S MM623002 Camshaft | Honda GROM S ECU Modification M Addition of a fuel control box M Proper exhaust system must be used to prevent re-flow pressure and heat M Other S