Description
Cvk Main Jet (#130) for 139QMB and GY6 Scooters
The Cvk Main Jet (#130) is designed specifically for 139QMB and GY6 scooters and mopeds. This part fits most 5mm main jet slot CVK carburetors, making it a versatile choice for various engine configurations. Like many scooter carburetors & jets, proper jetting may require some trial and error to achieve the best performance. For assistance, consult the blog for detailed jetting instructions.
Construction and Compatibility
This main jet features a Keihin round-style design, ensuring a reliable fit for compatible scooters. The thread size is M5x0.80, with an overall length of 8mm. It is suitable for both 50cc and 125cc to 169cc engines, providing flexibility for different models. If your engine has a code that starts with "QM" or "FM," this jet should work well with your setup.
When to Replace Your Main Jet
Consider replacing the main jet if you experience performance issues, such as poor acceleration or sluggish engine response. Regular maintenance may also necessitate jet replacement to accommodate modifications or changes in fuel type. Keeping your jet in good condition is important for maintaining engine performance.
Specifications
- Type: Main Jet
- Thread Size: M5x0.80
- Overall Length: 8mm
- Fits: 5mm main jet slot CVK carburetors
Fitment
This part is compatible with the following engine codes:
- 139QMB-based 50cc / 80cc engines
- 157QMJ-based 125cc / 150cc / 169cc engines
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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