Yuminashi 140cc 53MM Light Bore piston kit (GROM125/MONKEY 125 5 gears…)

Code: DRM-13102-K26-G53C


In Stock


This 140cc piston kit with the 12mm piston pin can be used on the 53mm cylinder of the GROM125 5-speed, Monkey Z125 5-speed and all models listed below to create a more powerful engine setup .

The 53mm piston set is ready to install with the 12mm piston pin for the 110cc and 125cc crankshaft and cylinder head.

If you are installing a high-lift camshaft, the valve pockets in the piston must be changed to match your camshaft lift.

This Light Bore 140cc kit should be installed with either a 120cc/min or 140cc/min Type B injector (the injector rate to use will be based on your location in the world)…

Compatible with the following vehicle models:


  • HONDA C110 SUPER CUB (2021- )
  • HONDA C125 SUPER CUB (SMART KEY) (2021- )
  • HONDA MSX GROM125 (5-GEARS) (2020- )
  • HONDA MONKEY Z125 (5-GEARS) (2021- )
  • HONDA ST125 DAX (2022- )
  • HONDA WAVE110i (2021- )
  • HONDA WAVE125i (2021- )

Additional information

Weight 0.300 kg



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