DROWsports Honda Grom LS198 4 Valve Big Bore Cylinder KitDROWsports x LimitSport NEW 66mm Big Bore Cylinder Kit for the 2014 2020 Honda Grom MSX125 and 2019 2020 Honda Monkey was designed specifically for the KOSO Grom 4v Head. We wanted to offer an affordable upgrade from our LS181 63mm cylinder. Taking features from the 181cc piston like; lightweight piston, strutted design piston, radius edge dome etc and applied it to our kit. We love everything about our 63mm LS181 but we wanted a little even more

Codo Variator & Clutch Kit (optional)

The cylinder is accompanied by a forged piston

Enhanced Performance: Improves combustion efficiency

GY6 Big Bore Kit:

5cc high-compression)

Be sure to always replace your clutch bell along with your clutch

Honda has its own unique color powder

The boiling point of 585°F

With its hard nickel pewter finish

KOSO Dash RX2 GP Style Easy to read gauge

Buyers TST bracket is designed for U

Made with a full billet CNC design