Racing 4-Stroke 140cc Engine Motor with Electric Start, Semi-Auto 3+1 & Reverse Fits Go Kart ATV Quad Trike Buggy Taotao Coolster Kazuma 110 125 XR50 CRF50 XR CRF 50 CT70 Dirt Bike Trike

Upgrade your go-kart, ATV, or buggy with this 140cc 4-Stroke Engine Kit featuring an auto clutch, electric start, and a semi-automatic 3+1 transmission with reverse. Designed for smooth operation and reliable performance, this engine is a great choice for riders who need ease of use without sacrificing power.The engine is equipped with a single-cylinder, horizontal OHC racing head, oil-cooled for better temperature control. It delivers 8kW of power at 7500 RPM and 9.5N·m of torque at 5000 RPM, giving your ride solid low-end strength and acceleration.Whether you're building a new machine or replacing a tired old engine, this unit provides a simple, powerful solution that’s compatible with a wide range of 4-wheelers and off-road vehicles.【Specifications】Displacement: 140ccEngine Type: Single Cylinder, Horizontal, 4-Stroke, 2-Valve, OHC Racing Head, Oil CooledBore x Stroke: 55mm x 59mmMax Power: 8kW @ 7500±375 RPMMax Torque: 9.5N·m @ 5000±250 RPMCompression Ratio: 8.8:1Clutch Type: Auto ClutchStarter: Electric Start, Semi-AutoIgnition: CDIFuel Type: GasolineOil Capacity: 900ml (15W/40-SE recommended)Transmission: 3 Forward Gears + 1 Reverse (Semi-Auto)Sprocket: 14T, 428 Chain, 17mm shaftEngine Dimensions: 470mm x 275mm x 280mmWeight: 23kg【Package Includes】1 × 140cc Engine1 × Kick Starter Lever1 × Gear Shift Lever1 × Intake Manifold1 × Manifold Hardware Kit

• Powerful 140cc Engine with Reverse: Features a 3+1 semi-automatic transmission (3 forward, 1 reverse) with auto clutch—perfect for off-road vehicles needing extra maneuverability.
• Electric Start & Auto Clutch: Easy operation with electric start and automatic clutch—ideal for beginners, youth riders, or utility setups.
• Oil-Cooled Racing Head: High-performance OHC racing head design ensures better heat dissipation and engine longevity during demanding use.
• Widely Compatible: Engine fits most go-karts, ATVs, buggies, and trikes from brands like Taotao, Coolster, Kazuma, and other 4-wheelers using 17mm 428 chain sprockets.
• Complete Engine Kit Included: Includes 140cc engine, kick starter lever, gear shift lever, intake manifold, and mounting hardware for easy installation.