Description
Keihin Idle Jet for Genuine and GY6 50cc Scooters
The Keihin Idle Jet, also known as a pilot jet, is designed to optimize fuel delivery in your scooter's carburetor. It's important for maintaining smooth engine operation, especially at low throttle openings. If your scooter hesitates when accelerating or struggles to run at idle, this jet may need replacement. It is one of the scooter carburetors & jets that can resolve these issues by ensuring the correct fuel mixture for your engine.
Performance Improvement
This idle jet regulates the fuel mixture from 0% to approximately 25% throttle, directly impacting how your scooter performs during low RPM situations. Clogged or improperly sized jets can lead to rough idling and unresponsive throttle. This precision-calibrated jet is made from high-grade brass, promoting consistent fuel flow and tuning stability.
When to Replace Your Idle Jet
If you've upgraded your scooter with a high-performance exhaust system or installed a larger cylinder, you may need to increase jet size to avoid a lean condition. This usually involves moving up one size, such as from a #38 to a #40. Regularly check your idle jet for clogs, especially if you're experiencing performance issues at low speeds.
Specifications
- Type: Keihin PB / CVK Idle Jet
- Material: Machined Brass
- Available Sizes: #38, #40, #42
Fitment
This idle jet is compatible with various 50cc scooters, specifically:
- Genuine Scooter Co (50cc 2-Stroke): Buddy 50, RoughHouse 50, Rattler 50, Black Cat 50
- Chinese GY6 50cc (139QMB): Fits PD18J and CVK style carburetors used on TaoTao, Wolf, Ice Bear, and Bintelli
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
Shop more: Scooter Carburetors & Jets · Scooter Parts
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