KOSO 170CC BIG BORE + 4 VALVE + CAM + ALL EXTRAS (COMPLETE)2014-2021 HONDA GROM & 2019-2021 HONDA MONKEY 125

​Want arm stretching power for your Honda Grom?

We're pulling a solid 20hp w/ this all inclusive set-up.

We've packaged all the hard to source supporting items, such as Koso 34m throttle body, PCX 150 injector, and the correct spark plug into one package for you. Hold on tight!   CJR ECU, Aracer or similar highly recommended for proper fueling.