ZARKO Lifan 140cc Racing Engine Kit Manual Clutch Kick Start 4-Speed Motor with Carburetor Air Filter CDI for Pit Dirt Bike SSR Apollo Taotao CRF50 XR50 CT70 Z50 Monkey Mini Trail
Genuine Lifan Performance Upgrade: 140cc oil-cooled 4-stroke racing engine offers more than four times the horsepower of OEM CRF50-class motors for explosive acceleration and torque response.
Manual 4-Speed Transmission (N-1-2-3-4): Delivers precise gear engagement and enhanced drivetrain control for track, pit, trail, and mini-moto competition riding.
Complete Bolt-On Kit: Includes carburetor, CDI, coil, intake, shifter, kick lever, and harness, reducing sourcing time and simplifying installation on compatible pit bike frames.
Durable Oil-Cooled Design: Consistent operating temperature helps prevent overheating under high RPM use, drifting, stunt training, and endurance trail runs.
Wide Model Compatibility: Fits most CRF/XR50/70 geometry, Monkey/CT70 clones, and aftermarket pit frames with 6.06 inch (154 mm) bolt spacing for easy swap-in upgrades.