14-20 for Honda MSX125 Grom KOSO NORTH AMERICA Big Bore Cylinder Kit MB623002
14-20 for Honda MSX125 Grom KOSO NORTH AMERICA Big Bore Cylinder Kit MB623002

14-20 for Honda MSX125 Grom KOSO NORTH AMERICA Big Bore Cylinder Kit MB623002

KOSO NORTH AMERICA

$384.95

Quantity

Manufacturer: Koso
MPN: MB623002
Title: 170cc Big Bore Kit

Unleash all the power your Grom can handle with this big bore kit.
  • Allows you to use pump fuel with a compression ratio of 11.5 to 1
  • Retains the reliability of a stock motor
  • Includes ceramic-coated cylinder, 61mm forged piston, rings, pin, gasket kit and banjo bolts

Important Notes

NOTESProper exhaust system must be used to prevent re-flow pressure and heat.

Fitment Chart

YearMakeModelPositionNotes
2019-2020HondaZ125M Monkey--
2014-2020HondaMSX125 Grom--