Prima
Prima Keihin PB Main Jet Kit (4mm, 10 pcs); 139QMB, Gen 50cc
Description
This Prima PB CVK Main Jet Kit fits Genuine 50cc scooters and other GY6 50cc engines with CVK-style carbs noted below.
Specifications:
- Round, Keihin PB style jets
- Kit contains 10 different jet sizes: 70, 75, 80, 85, 90, 95, 100, 105, 110, and 115
- Overall Length: 7mm
- Jet Body Diameter: 5mm
- Jet Thread Size: M4 x 0.7mm fits 4mm main jet ports.
- 70 Main Jet Inner diameter: 0.70mm (70)
- 75 Main Jet Inner diameter: 0.75mm (75)
- 80 Main Jet Inner diameter: 0.80mm (80)
- 85 Main Jet Inner diameter: 0.85mm (85)
- 90 Main Jet Inner diameter: 0.90mm (90)
- 95 Main Jet Inner diameter: 0.95mm (95)
- 100 Main Jet Inner diameter: 1.00mm (100)
- 105 Main Jet Inner diameter: 1.05mm (105)
- 110 Main Jet Inner diameter: 1.10mm (110)
- 115 Main Jet Inner diameter: 1.15mm (115)
Compatibility:
| Genuine Buddy 50 | Genuine Roughhouse 50 |
| Genuine Rattler 50 | Genuine Black Cat 50 |
| Chicago Scooter Co. go. 50 | Chicago Scooter Co. go. Max 50 |
| Chicago Scooter Co. Nitro 50 | Chicago Scooter Co. Bella 50 |
| Keihin 50cc carburetors | 50cc CVK Style Carburetors |
| PD18J Carburetors | And many other PB and CVK-style carburetors |
Jetting takes trial and error to obtain optimal performance from your scooter. Many scooters are jetted lean from the factory to meet emissions requirements. Learn more on our Carburetor Jetting 101 page. Additionally, there are many good tutorials on how to properly jet a carburetor and you should refer to them to ensure you do not damage your engine by jetting too lean.
About Prima: Prima is the industry leader in premium scooter accessories, service parts and scooterist protective apparel. Prima brand products are designed direct-fit for all popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, Royal Alloy and GY6 / QMB powered scooters.
Made in Taiwan.
This product is intended for off-road use only.
This product is not intended for use on public roads or land.
This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.
*Performance upgrades are considered racing parts and are not covered by warranty.
Product Diagrams
Model Fitments
Genuine RH 50
Genuine Buddy 50
Gen Engines 50cc: 139QMA , 139QMB , 1P39QMB , 1P39QMA , 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, LJ139QMB as well as 147QMD (GY6 80cc) Brands: Amstar, Amigo, Ascend, Baotian, Bashan, Blade, Boom, Chicago Scooter Company, Dongfang, Roketa, Baotian, Bashan, BMS, Cool Sports, E Ton, Fly Wing, Eagle, Fly, Italica, Riya, Ice Bear, Jackel, Jet Moto, JCL, Taotao, Peace, JM Star, Jonway, Kazuma, Keeway, KMD, Kymco, Lance, Lifan, Linhai, Loncin, Longbo, Fuxin, Jiajue, Tao Tao, Tao Motors, Trailmaster, Maxtrade, Meitien, Motofino, Motorino, NST, Panterra, Panther, Qlink, Yiben, Red Streak, Redcat, Roketa, Schwinn, Strada, SYM, Tank, Terminator ,Tomberlin, TNG, United Motors, Vento, Vitacci, Wildfire, Wolf, X-Treme, X-Pro, Yongfu, ZNEN, Zhongneng , Zhilong, Geely, Wangye, ZH and more Manufactured by: Taizhou Zhongneng Motorcycle Co.; Jiangsu Zhongneng Motorcycle Co.; Jiangsu Meijunte Technology Co.; Taizhou Qianxin Vehicle Co.; Ningbo Dongfang Lingyun Vehicle Made Co.; Taizhou Zhilong Technology Co.; Zhejiang Jiajue Motorcycle Manufacturing Co.; Zhejiang Gelly Ming Industrial Co.; Taizhou City Senglong Motorcycle Manufacture Co.; Jiangsu Sacin Motorcycle Co.; Jiangsu Linhai Power Machinery Group Co.; Zheijiang TaoTao Vehicles Co.; Zhejiang Senling Motorcycle Co.; Sanmen County Yongfu Machine Co; Taizhou Jiaojiang Zhiwei Motorcycle Manufacture Co.; Huzhou Daixi Zhenhua Technology Trade Co.; Taizhou Zhongneng Motorcycle Co.; Zhejiang Riya Motorcycle Co.; Ningbo Longjia Motorcycle Co.; Taizhou Zhongneng Motorcycle Co.; and moreuine Buddy 125
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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