GY6 125/150cc Long Case Engine Assembly | Blue Line OEM

Simplify your next engine build with the Blue Line GY6 Long Case Assembly Kit. Designed for 125cc ,150cc, 169cc GY6 scooters, this high-quality engine case kit comes with the most difficult work already done—buffers and bearings are professionally pressed in at the factory, saving you time and specialized tool costs.

Whether you are replacing a cracked case or starting a high-performance build from scratch, this kit provides a precision-engineered foundation for your 157QMJ-based engine.

Product Highlights:

• Ready to Build: Bearings and buffers are pre-installed for a hassle-free assembly.

• Complete Set: Includes essential hardware to get your project started immediately.

• OEM Standards: Engineered by Blue Line to meet or exceed factory specifications for fit and durability.

• Long Case Design: Specifically for 125/150cc scooters using a long-case belt configuration.

Technical Compatibility: This assembly is compatible with 157QMJ, 161QMK, 152QMI, and 1P61QMK-based engines (125cc / 150cc / 169cc). Fits common engine codes, including:

• YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ

• 1P57QMJ, BN157QMJ, BN161QMK-A

Don't see your engine listed? If the engine code includes "QM" or "FM" and this is for a long-case scooter with 12" -14" wheels, this product is compatible with your vehicle.

Specifications:

• Dimensions: 20"L x 12"W x 5"H
• Includes hardware
• Buffers and bearings installed

About Blue Line: Blue Line offers OEM equivalent replacement parts for on-road scooters. Blue Line parts are a direct-fit replacement when OEM parts are unavailable or overly expensive for your scooter. Since 2018, Blue Line has provided quality parts at great prices.

*This product is intended as an OEM equivalent for listed models. Any misuse, alteration or alternative application is prohibited by law.

• Complete Long Case Assembly
• Pre-installed Crankcase Bearings
• Pre-installed Engine Isolation Buffers
• Includes necessary assembly hardware

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