Lifan 140cc Engine Motor Kit 4 Stroke Racing Engine Manual Clutch Kick Start for XR50 CRF50 XR CRF 50 70 ATC70 Z50 Taotao DB14 DB17 CT70 CT90 Dirt Pit Bike Motorcycle Trail Bikes

Boost your bike’s performance with this Lifan 140cc 4-Stroke Engine Kit, designed for off-road enthusiasts and DIY builders. This powerful single-cylinder motor features a manual clutch, kick start, and a 4-speed transmission (N1234) with the ability to start in any gear—great for racing, trail riding, or pit bike setups.Built with an OHC racing head and oil-cooling system, it delivers an impressive 8kW of power at 7500 RPM and 9.5Nm of torque at 5000 RPM, giving you reliable acceleration and speed. The high compression ratio of 9.47:1 ensures efficiency and torque for uphill or rugged terrain.This complete kit includes all the parts needed for a seamless engine swap—from carburetor and wiring harness to CDI and clutch cable, making it a plug-and-play solution for compatible frames.【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 ShaftDimensions: 470 x 275 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 × Wiring loom1 × CDI Box1 × Ignition Coil1 × Clutch Cable

• High-Performance 140cc Lifan Engine: Features a single-cylinder, 4-stroke, oil-cooled OHC racing head with 8kW max power and 9.5N·m torque for serious off-road riding.
• Manual Clutch + Kick Start: Classic 4-speed (N1234) manual clutch setup with kick start and “Start in Any Gear” 4-up shifting pattern—perfect for trail and pit riders.
• Fully Equipped Swap Kit: Includes carburetor, air filter, CDI, ignition coil, clutch cable, wiring loom, intake manifold, and all required hardware for fast installation.
• Widely Compatible Fit: Designed for dirt bikes with 154mm (6") bolt spacing—fits Apollo RFZ125, SSR110, DB14/DB17, CRF50/70, XR50/70, CT70, Z50, Monkey, and more.
• Built for Performance and Durability: High compression ratio (9.47:1), oil capacity of 900ml (15W/40-SE), and robust design make it ideal for both upgrades and replacements.