Lifan 140cc Engine Motor Kit Manual Clutch Kick Start – Complete Swap Set with Exhaust, Carb, CDI, Wiring – Fits CRF50 XR50 CT70 CRF 50 XR 70 Apollo SSR Pit Dirt Trail Bikes 4 Stroke Racing Engine

Take your ride to the next level with this Lifan 140cc 4-Stroke Engine Complete Swap Kit, designed for dirt bikes, pit bikes, and trail bikes. Featuring a manual clutch, kick start, and a 4-speed transmission (N1234, 4-up with Start in Any Gear), this engine is built for power and precision.The oil-cooled OHC racing head provides better temperature control and longer engine life during intense rides. With 8kW of max power and 9.5Nm of torque, this engine delivers the acceleration and endurance needed for off-road riding.The included exhaust pipe, carburetor, CDI, wiring loom, and other key components make this a plug-and-play upgrade or replacement kit. Whether you're restoring a vintage bike or building a new one, this kit gives you everything you need in one box.【Specifications】Displacement: 140ccEngine Type: Single Cylinder, Horizontal, 4-Stroke, OHC Racing Head, Oil CooledBore x Stroke: 55mm x 59mmMax Power: 8kW @ 7500±375 RPMMax Torque: 9.5N·m @ 5000±250 RPMCompression Ratio: 9.47:1Clutch Type: Manual ClutchStarter: Kick StartIgnition: CDIOil Capacity: 900ml (15W/40-SE recommended)Transmission: 4-Speed (N1234), Start in Any Gear, 4-UpSprocket: 15T for 428 Chain, 17mm ShaftEngine Dimensions: 470mm x 275mm x 280mmWeight: 23kgMounting Bolt Spacing: 154mm / 6 inches【Package Includes】1 × Lifan 140cc Engine1 × Kick Starter Lever1 × Gear Shift Lever1 × Intake Manifold1 × Manifold Hardware Kit1 × Carburetor1 × Air Filter1 × Wire Loom1 × CDI Box1 × Ignition Coil1 × Clutch Cable1 × Exhaust Pipe

• Powerful Lifan 140cc Engine: Oil-cooled, 4-stroke single-cylinder with OHC racing head. Delivers 8kW power @7500 RPM & 9.5N·m torque @5000 RPM—built for serious performance.
• Full 4-Speed Manual Setup: Features N1234 4-speed manual transmission, 15T 428 chain sprocket, and “Start in Any Gear” design—ideal for pit and trail bikes.
• Kick Start + CDI Ignition: Reliable kick start system paired with high-performance CDI ignition ensures quick startup and smooth riding across terrain.
• Complete Swap Kit Included: Comes with carburetor, air filter, exhaust pipe, CDI, ignition coil, clutch cable, wire loom, and all mounting hardware for fast and easy installation.
• Wide Compatibility: Fits most dirt/pit bikes including CRF50/70, CT70, XR50/70, DB14, DB17, Apollo, Coolster, Taotao, Z50, Monkey, and more with 154mm (6") bolt spacing.