NCY
Description
Unlock the hidden power potential of your 4-stroke scooter with the NCY Performance Camshaft. Designed specifically for the GY6 139QMB engine platform, this high-lift cam profile increases valve duration and lift, allowing your engine to breathe deeper and rev higher. This is the recommended essential upgrade whenever you install a 72cc, 82cc, or 100cc big-bore cylinder kit to ensure your engine can fully utilize the increased displacement.
By optimizing the intake and exhaust timing, this camshaft shifts your power band upward, resulting in significantly improved acceleration and higher top-end performance.
Product Features
- Optimized Lobe Geometry: Increased lift and duration profiles significantly improve volumetric efficiency compared to restrictive OEM stock cams.
- Precision-Machined Sprocket: Includes a factory-indexed 34-tooth timing sprocket for precise valve-to-piston synchronization.
- Hardened Steel Core: Constructed from high-strength, wear-resistant steel to withstand the sustained high-RPM heat and stress of modified performance builds.
- Plug-and-Play Fitment: Designed for drop-in installation into stock 139QMB cylinder heads (no machining required).
Technical Specifications
- Intake Lobe: 25.8mm x 21mm x 10.3mm
- Exhaust Lobe: 25.5mm x 21mm x 10.2mm
- Sprocket Teeth: 34
- Bearings: 2 TPI #16002C3 (18x32x8mm)
- SKU Reference: 1100-1250
Comprehensive Engine Fitment Matrix
This camshaft is a direct fit for 139QMB-based 50cc, 72cc, 82cc, and 100cc 4-stroke engines using the following factory designations:
| Engine Series Code | Compatible 139QMB / GY6 50cc Variants |
|---|---|
| Common Codes | 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ139QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD |
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
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 more
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
