Top-End

Product Name:   CYLINDER KIT HYPER RACE DOMED 47.6MMProduct Type:   Big Bore KitBrand:   ATHENAMFG Part Number:   070100Features:     Feature a cast aluminum cylinder with a nickel carbide plated bore All kits come with a cylinder, cylinder head, piston assembly (piston, rings, wrist pin, and circlips), carbon reeds and all top end gaskets

Product Name:   CYLINDER KIT HYPER RACE W/HEAD 46.6MMProduct Type:   Big Bore KitBrand:   ATHENAMFG Part Number:   070200Features:     Feature a cast aluminum cylinder with a nickel carbide plated bore All kits come with a cylinder, cylinder head, piston assembly (piston, rings, wrist pin, and circlips), carbon reeds and all top end gaskets

Product Name:   BIG BORE KIT GROM 170CCProduct Type:   Honda Grom/Monkey Big Bore KitBrand:   KOSOMFG Part Number:   MB623002Description:   Unleash all the power your Honda GROM can handle with the Koso 170cc Big Bore kit.Features:     Ceramic coated aluminum cylinder 61mm bore, 11.5:1 compression ratio forged piston/ring kit (premium fuel required) Top end gasket kit...

Product Name:   CAM CHAIN TENSIONER ASSEMBLYProduct Type:   Honda Grom/Monkey Cam Chain Tensioner AssemblyBrand:   KOSOMFG Part Number:   MU623000Features:     High quality OEM replacement cam chain tensioner assembly Lasts longer than OEM units (which are prone to premature wear issues) Highly recommended for use with Koso big bore kits

Product Name:   GROM 170CC BIG BORE KIT W/4-VALVE CYLINDER HEADProduct Type:   Honda Grom/Monkey Big Bore Kit w/4-Valve Cylinder HeadBrand:   KOSOMFG Part Number:   MB623003Features:     Koso ceramic coated big bore cylinder kit forged w/4-valve piston and gaskets Koso 4-valve cylinder head (complete with camshaft, rocker arms, intake manifold, and all other parts shown in...

Product Name:   GROM CAMSHAFT KITProduct Type:   Honda Grom/Monkey Camshaft KitBrand:   KOSOMFG Part Number:   MM623002Features:     The Koso 240° camshaft increases power and torque compared to the stock camshaft Can be used with a stock engine, or for optimal gains, use with the Koso 170cc Big Bore Kit Not legal for use in California...

Product Name:   GROM HI-FLO OIL PUMPProduct Type:   Honda Grom/Monkey High Flow Oil PumpBrand:   KOSOMFG Part Number:   NF623000Features:     Highly recommended for use with all engine upgrades Increases oil flow by 40% Helps prevent engine failure and lowers oil temperature

Product Name:   PISTON/RING KIT REPLACEMENT PARTProduct Type:   Piston/Ring KitBrand:   KOSOMFG Part Number:   MD623000

Product Name:   TOP END GASKET KIT REPLACEMENT PARTProduct Type:   Top End Gasket KitBrand:   KOSOMFG Part Number:   MA623100