Eliminate rough idling and low-end bogging with a precision-calibrated Keihin Idle Jet.
The Keihin Idle Jet (Pilot Jet) controls your scooter's fuel mixture from 0% to about 25% throttle. If your bike struggles to stay running at stoplights or hesitates when you twist the throttle, your idle jet is likely clogged or incorrectly sized. These high-quality brass jets are designed for Keihin PB and CVK style carburetors found on most Genuine 50cc and GY6 50cc scooters.
If you have upgraded to a performance exhaust or a "Big Bore Kit," you often need to move up one size (e.g., from a #38 to a #40) to prevent a lean condition. Jetting is a process of trial and error.
