TB Parts TB 186cc Big Bore Kit – Grom & Monkey - 2013-20 GROM/ 2019-21 MONKEY TBW9150

 TB 186cc Big Bore Kit – Grom & Monkey

Fits 2013-2020 HONDA GROM / 19-21  HONDA MONKEY

Requires a Fuel Controller & A/F Monitor (SOLD SEPARATELY) for Proper fueling.

TBW9150

186cc Big Bore Performance Kit (64mm) – Grom:

– Ceramic coated all aluminum cylinder (no steel sleeve)
– Lightweight 64mm piston with rings, pin, & clips
– Head gasket kit

This is the biggest Grom & Monkey 125 bore kit on the market! The all aluminum ceramic coated cylinder is lighter than a steel sleeved aluminum cylinder, reduces friction (increasing power), improves sealing, and provides better heat transfer (runs and cools down quicker). This new big bore kit will provide the extra power to make your new bike a lot more fun to ride! High quality parts and requires no machining to the cases.

IMPORTANT UPDATE: These bore kits are only for the 2021 and older models (will not work on the new 2022 models as the engine has been redesigned)

** Kit should be installed by a certified mechanic to ensure proper function.
Improper installation could result in catastrophic engine failure.