Koso 170cc 61mm Big Bore Kit – Honda Grom & Monkey (2014-2020)
Koso 170cc 61mm Big Bore Kit – Honda Grom & Monkey (2014-2020)
$393.17
Out of stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
Orders placed by 1pm EST on weekdays ship the same day.
Product Details
DESCRIPTION: Want to unleash all the power your Honda Grom can handle? Koso's 170cc Big Bore Kit (MB623002) is the perfect addition for you! The kit includes a ceramic coated cylinder, 61mm forged piston, rings, pin, gasket kit and banjo bolts. Its compression ratio of 11.5 to 1 will allow you to still use premium pump gas and keep the reliability of a stock motor. Made from the best components available on the market, Koso's 170cc big bore kit will amaze you! Also compatible with the Honda Monkey 125cc. Fits model years 2014 to 2020.***Please Note: You may need to modify your engine case to accommodate the larger cylinder****Please note: Compatible with 2014-2021 Honda GromCylinder Displacement: 169.2ccCylinder Material: Aluminum/Ceramic CoatedCylinder Overall Height: 90.5mmPiston Diameter: 61mmPiston Type: ForgedCompression Ratio: 11.5 to 1Honda Grom 125, Honda Monkey 125
NOTE: You may need to modify your engine case to accommodate the larger cylinder****Please note: Compatible with 2014-2021 Honda GromCylinder Displacement: 169.2ccCylinder Material: Aluminum/Ceramic CoatedCylinder Overall Height: 90.5mmPiston Diameter: 61mmPiston Type: ForgedCompression Ratio: 11.5 to 1Honda Grom 125, Honda Monkey 125
Additional information
| Weight | 3.6 lbs |
|---|---|
| Dimensions | 13 × 8 × 6 in |
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 125cc
- Fits Models / Common Applications: Honda Grom and other compatible models may apply.
- Fitment Notes: Big Bore
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Will this fit a Honda?
A: This SKU is listed with Honda model fitment where the scooter also matches the listed engine or fitment notes.
Q: Is this for 125cc scooters?
A: This SKU is listed with 125cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 3.6 lbs |
|---|---|
| Dimensions | 13 × 8 × 6 in |
