Article by Steady Garage
The Honda Grom big bore kit is designed to be a bolt on upgrade. This kit will allow your Monkey or Grom 125 to make more power than stock without the hassle of boring out the case. This kit includes a new high-performance DOHC 181cc cylinder, forged piston and rings. The cylinder features a ceramic lining that offers the best heat dissipation and durability. It also has a higher compression ratio of 11.8:1 that is pump 91+ octane friendly.
Honda Grom Big Bore Kit: Boost Your Grom’s Power the Right Way
PLEASE NOTE: THIS ENGINE IS FOR RACE USE ONLY AND DOES NOT COMPLY WITH POLLUTION CONTROLLED ROAD REGULATIONS. TBparts and the owner of this site assume no liability for damage caused by the improper installation or use of this product.