Looking to give your mini bike a serious power upgrade? This LYEXD 140cc 4-stroke racing engine kit is built to drop right into your Honda CRF50, CRF70, XR50, XR70, Z50, Z50R, or CT70 pit bike. It’s a complete set – comes with the engine, kick starter, gear shift lever, sprocket cover, carburetor, CDI, intake manifold, gaskets, and screws. Specs: single-cylinder, horizontal, 4-speed manual clutch (1N234), CDI ignition, 55mm x 59mm bore/stroke, 8kw max power, 9.5N.M torque, air-cooled. Uses 900ml of 15W/40 4-stroke oil. Fits a bunch of other Honda mini/trail models too (like QA50, SL70, ST90, etc.). Install is straightforward if you’re familiar with engine swaps. Great for trail riding, pit racing, or just having way more fun in the dirt. Ships with a wiring diagram to help you get it hooked up right.
