Cvk Main Jet (# 130) for Scooters & Mopeds
ITEM# TT-26431
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Description
Cvk Main Jet (#130) for 139QMB and GY6 Scooters
The Cvk Main Jet (#130) was built for 139QMB and GY6 scooters and mopeds. It suits most CVK carburetors that have a 5mm main jet slot, so it works across a range of engine setups. As with other scooter carburetors & jets, getting the jetting right can take some experimentation to reach peak performance. For step-by-step jetting guidance, check the blog.
Construction and Compatibility
The jet uses a round Keihin-style body, which gives it a dependable fit on compatible scooters. It has an M5x0.80 thread and measures 8mm overall in length. It works with both 50cc engines and 125cc to 169cc engines, so it covers several different models. If your engine code begins with "QM" or "FM," this jet should suit your setup.
When to Replace Your Main Jet
Think about swapping the main jet if you notice performance problems like weak acceleration or a slow throttle response. Routine upkeep or changes to your engine or fuel type can also call for a new jet. Keeping the jet in good shape helps your engine run as it should.
Specifications
- Type: Main Jet
- Thread Size: M5x0.80
- Overall Length: 8mm
- Fits: 139QMB-based 50cc and 80cc engines and 157QMJ-based 125cc, 150cc
Fitment
Fits:
- 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD engines (50cc/80cc)
- Other QMA and QMB engines (50cc/80cc)
- 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A engines (125cc/150cc/169cc)
- Other QMJ, QMK and QMI engines (125cc/150cc/169cc)
How to choose: Pick this jet for a CVK carburetor with a 5mm main jet slot, an M5x0.80 thread, and an overall length of 8mm.
Shop more: Scooter Carburetors & Jets · Scooter Parts
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