Honda Grom Koso® 170cc Big Bore Cylinder/Head Kit

*Does not fit 2022+ models

This top-kit is a perfect add-on for the power enthusiast.

 Includes everything you need to get your Grom to 170cc! 

• All parts are made from high-quality components for reliability and durability
• Includes 170cc ceramic-coated cylinder, forged piston, performance camshaft, crankshaft bearing, rocker arms, 4-valve cylinder head, intake manifold, gaskets and more.