Cvk Main Jet (# 120) for Scooters & Mopeds
ITEM# TT-26527
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Description
CVK Main Jet (#120) for GY6 Scooters and Mopeds
This CVK Main Jet (#120) suits GY6 scooters and mopeds that use 17.5mm to 24mm Dellorto SHA and PHBG-style carburetors, along with CVK-type carburetors. It has a direct effect on how well your engine performs. You can find it alongside other scooter carburetors & jets in our range. Getting the jetting right may take some trial and error, so check jetting guides for direction.
Build Quality
The main jet uses a Keihin round design and is made to firm quality requirements. It has an M5x0.75 thread and measures 8mm overall, so it works with compatible carburetors. A correct fit matters for keeping the engine running as it should.
Signs It May Need Replacing
If acceleration feels weak or idle is uneven, the jet may need attention. Changing it can help balance the fuel-air mix and support better engine efficiency. When tuning for particular riding conditions, testing a few different jet sizes can help you find the best option.
Specifications
- Type: Keihin round-style main jet
- Thread Size: M5x0.75
- Overall Length: 8mm
- Fits: GY6 125cc/150cc/169cc engines with Dellorto SHA/PHBG and CVK-style carburetors
Compatibility
Fits:
- GY6 125cc, 150cc and 169cc engines (157QMJ-based, with 5mm main jet slot carburetor)
- Engine codes 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A
- Other QMJ, QMK and QMI engines (5mm main jet slot carburetor)
- Other FM engine codes (5mm main jet slot carburetor)
How to choose: Confirm your carburetor has an M5x0.75 main jet thread and a 5mm main jet slot. This jet is not compatible with PHVA carburetors.
Shop more: Scooter Carburetors & Jets · Scooter Parts
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