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Koso 170cc Big Bore Kit Honda Grom 2014-2020

Item: P389267
1 Read 1 Review 3 Q&As Write a Review

The first step on the journey to big power is big displacement. This Big Bore Kit from Koso gets you power pilGromage started on the right foot. Read More

$384.95
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Product Details

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 MSX125

"There is no replacement for displacement."

If you love your Grom, but wish it had just a little bit more power (OK, maybe a lot more), then the 170cc Big Bore Kit from Koso might be just what the moto-pediatrician ordered. This kit includes a ceramic coated cylinder with fresh gaskets, a forged 61mm piston and everything else you'll need to bump your Grom's displacement to 170cc. 

Features:

  • 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
  • Gasket kit
  • Banjo bolts
Product Style RevZilla Item # MFR. Product # Availability
Product Style Koso 170cc Big Bore Kit Honda Grom 2014-2020 RevZilla Item #1246460 MFR. Product #MB623002 AvailabilityIn Stock: Ships next business day
This product is vehicle specific.
Select a vehicle to ensure fitment.
This Product Fits
Honda
Grom MSX125 2014-2020
Grom MSX125 ABS 2019, 2020

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

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1 Customer Reviews
1 4/5
3 Questions & 2 Answers
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