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Koso 170cc Big Bore Kit With 4V Head Honda Grom 2014-2020

$854.96
$949.95
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Koso 170cc Big Bore Kit With 4V Head Honda Grom 2014-2020 Resources

Koso 170cc Big Bore Kit With 4V Head Honda Grom

This kit for the Honda Grom not only boosts your displacement to 170cc, it also doubles the amount of valves! Unleash the Grom's true power!

This is a very technical kit, please review the fitment notes and additional requirements before ordering. 

Features:

  • Greatly improved engine performance
  • Increases cylinder displacement to 170cc
  • Upgrades engine from 2 to 4 valves
  • Stainless steel 24mm intake valves
  • Stainless steel 20mm exhaust valves
  • Performance cam shaft

Note: Additional parts are required. 

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Please review this product's fitment notes & exceptions prior to purchase: Add to Cart

This product is vehicle specific. Click here to select your bike to ensure fitment.

Fitment Notes & Exceptions
  • This kit should be installed by a skilled or experienced engine mechanic, catastrophic engine failure could occur if this kit is installed or tuned incorrectly
  • Additional upgrades are required when running this kit
  • Fuel tuning is required

This Product Fits:


Honda
Grom MSX125 2014-2020
Grom MSX125 ABS 2019, 2020
Product Style Item # Store SKU Manufacturer Product # Availability
Product Style Koso 170cc Big Bore Kit With 4V Head Honda Grom 2014-2020 Item # 1246457 Store SKU Manufacturer Product # MB623003 Availability Available: Requires 1-2 business days of lead time prior to shipment