Big bore engines for the Honda Grom 125 will require a larger throttle body so that your engine can perform and run optimally. Koso 34mm Throttle Body will do just that! Perfect for displacement of 180cc and higher! Throttle body does not come with any sensors, so swapping over the sensors from the stock throttle body is required. Koso Large Intake Manifold is required, the 34mm throttle body will not work with OEM manifold.
For those with an stock USDM throttle body laying around, we offer store credit of $60 if you would like to send them in! Please send it to the provide address below! Be sure to include your contact information (name, phone #, email) so that we could contact you and send you a voucher for the store credit. Throttle body must be in good working order and undamaged.
Voucher does not expire and it could be used anytime! It's non-transferrable.
- Steady Garage
- ATTN: GROM TB CREDIT
- 861 Meridian St
- Irwindale, CA 91010
This product is legal for closed-course competition use only; for racing vehicles (a competition vehicle not used on public highways). Intended for off-road use or race purposes; may not meet regulations of pollution controlled roads or highways. Not legal for vehicles registered and use in California.