Upgrade your dirt bike's power and performance with this complete 140cc 4-stroke racing engine kit. Featuring a manual clutch and 4-speed transmission (0-1-2-3-4), this engine delivers 8kW of output power and 9.5N.m torque for exceptional acceleration and endurance.
The kit comes with everything you need for a smooth installation — including a CDI ignition system, wiring harness, carburetor, clutch lever, air filter, throttle and clutch cables, kick starter, exhaust pipe, and gear shift lever.
Designed as a direct replacement or upgrade for Honda XR50, CRF50, CRF70, CT70, ATC90, CT110, and similar dirt or pit bikes, this 140cc motor offers outstanding durability, fuel efficiency, and easy maintenance. Perfect for both hobbyists and racers looking to transform their mini bike into a true performance machine.