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TB Parts - 186cc Big Bore Kit Honda MSX125 GROM and Monkey 2014-2020

Vital Information
Part No TBW9150
Stock Level 1 Left

Key Features:

  • Ceramic coated all aluminum cylinder
  • Includes gasket kit
  • Large cooling fins for efficient heat dispersion
  • Ports on cylinder allow for an external oil cooler (Part No. TBW9153)


  • Grom - 2014-2020
  • Monkey - 2014-2020

Kit Includes:

  • TBW1027
  • TBW1041
  • TBW1032

Must be used with an aftermarket fuel controller to prevent a lean condition and damage to your engine

We recommend PREMIUM fuel 

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Since 2004, every purchase from TBolt USA includes access to technical support from our staff of experts and our online Pit Bike Technical Info Database!

We have all necessary support parts on hand.

Most orders ship same, or next business day, unless otherwise noted above.