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Koso 170cc Big Bore Kit Honda Grom 2014-2020

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This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

Koso 170cc Big Bore Kit Honda Grom 2014-2020 Resources

Koso 170cc Big Bore Kit Honda Grom MSX125


  • Increases cylinder displacement to 169.2cc
  • Compression ratio: 11.5:1
  • Piston size: 61mm
  • Piston type: forged
  • Includes: ceramic coated cylinder, 61mm forged piston, rings, pin, gaskets and banjo bolts
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This product is vehicle specific. Click here to select your vehicle to ensure fitment.

This Product Fits:

Grom MSX125 2014-2020
Grom MSX125 ABS 2019, 2020
Product Style Item # Store SKU Manufacturer Product # Availability
Product Style Koso 170cc Big Bore Kit Honda Grom 2014-2020 Item # 1246460 Store SKU Manufacturer Product # MB623002 Availability In Stock: Ships next business day
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