NCY CVK MAIN JET (# 145)

DESCRIPTION: This NCY main jet (#145) works with 139QMB and GY6 bikes and nearly any 5mm main jet slot CVK carburetor.Jetting is something that takes trial and error. See our blog of jetting instructions for more info.Original Parts For Scooters SKU 114-35-145Specifications:
Keihin round-style main jet
Thread size: M5x0.80
Overall Length: 8mm

Compatibility:139QMB-based 50cc / 80cc engines with the following engine codes:

139QMA
139QMB
1P39QMB
1P39QMA-2

YN139QMB
JJ1P39QMB
139FMA-2
BD1P39QMB

BN139QMB
147QMD
Other QMA models
Other QMB models

157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

157QMJ
161QMK
152QMI
1P61QMK

YN1P57QMJ
1P52FMI
154FMI
JJ157QMJ

1P57QMJ
BN157QMJ
BN161QMK-A
Other QMJ, QMK, and QMI models

Don’t see your engine listed? If the engine code includes “QM” or “FM” and you’re running a 5mm main jet slot CVK carburetor, this product is compatible with your vehicle.About NCY: NCY is the aftermarket performance parts leader for most popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered scooters. Made in Taiwan with strict quality standards since 1997, NCY is ISO 9001 certified.Made in Taiwan.

SPECIFICATIONS: Specifications:
Keihin round-style main jet
Thread size: M5x0.80
Overall Length: 8mm

COMPATIBILITY: Compatibility:139QMB-based 50cc / 80cc engines with the following engine codes:

139QMA
139QMB
1P39QMB
1P39QMA-2

YN139QMB
JJ1P39QMB
139FMA-2
BD1P39QMB

BN139QMB
147QMD
Other QMA models
Other QMB models

157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

157QMJ
161QMK
152QMI
1P61QMK

YN1P57QMJ
1P52FMI
154FMI
JJ157QMJ

1P57QMJ
BN157QMJ
BN161QMK-A
Other QMJ, QMK, and QMI models

Don’t see your engine listed? If the engine code includes “QM” or “FM” and you’re running a 5mm main jet slot CVK carburetor, this product is compatible with your vehicle.About NCY: NCY is the aftermarket performance parts leader for most popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered scooters. Made in Taiwan with strict quality standards since 1997, NCY is ISO 9001 certified.Made in Taiwan.

157QMJ ENGINES: 157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

157QMJ
161QMK
152QMI
1P61QMK

YN1P57QMJ
1P52FMI
154FMI
JJ157QMJ

1P57QMJ
BN157QMJ
BN161QMK-A
Other QMJ, QMK, and QMI models

Don’t see your engine listed? If the engine code includes “QM” or “FM” and you’re running a 5mm main jet slot CVK carburetor, this product is compatible with your vehicle.About NCY: NCY is the aftermarket performance parts leader for most popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered scooters. Made in Taiwan with strict quality standards since 1997, NCY is ISO 9001 certified.Made in Taiwan.

139QMB ENGINES: 139QMB-based 50cc / 80cc engines with the following engine codes:

139QMA
139QMB
1P39QMB
1P39QMA-2

YN139QMB
JJ1P39QMB
139FMA-2
BD1P39QMB

BN139QMB
147QMD
Other QMA models
Other QMB models