Description
Cvk Main Jet #155 for 139QMB and GY6 Scooters
The Cvk Main Jet #155 is specially made for use with 139QMB and GY6 engines, compatible with most 5mm main jet slot CVK carburetors. This component is important for tuning your scooter’s performance, allowing you to adjust the fuel mixture for better efficiency. It is one of the scooter carburetors & jets that can significantly impact your ride's handling and power delivery. Keep in mind that achieving the right jetting often requires some trial and error.
Compatibility Overview
This main jet is suitable for a variety of engines ranging from 50cc to 150cc. It is commonly found in scooters and mopeds equipped with 139QMB and 157QMJ engines. Check that your engine code begins with "QM" or "FM" to ensure compatibility with this jet.
Specifications
- Type: Keihin round-style main jet
- Thread Size: M5x0.80
- Overall Length: 8mm
Fitment
This main jet fits a wide range of engine codes, providing versatility for various models. Below are some specific engines that are compatible:
- 139QMB: 1P39QMB, 1P39QMA-2
- YN139QMB: JJ1P39QMB, 139FMA-2
- BN139QMB: 147QMD, Other QMA models
- 157QMJ: 161QMK, 152QMI
- YN1P57QMJ: 1P52FMI, 154FMI
- 1P57QMJ: BN157QMJ, BN161QMK-A
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
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