New generation 2 140cc YX engine from the YX Motor Sport factory f.

The factory claim 15bhp at the flywheel from this engine & that's with a stock magneto and not with a rotor kit.

This engine is different from the 150cc version,

it standard exhaust position so it does not limit fitments.

The manifold sits at the correct angle so no fuel problems.

Will replace most other pit bike engines but you will need a new exhaust if replacing a YX150.

Before considering purchasing this engine there are a few things you need to know, your exhaust must have an internal bore of at least 28mm, you will need a oil cooler, your back wheel must be heavy duty otherwise it will rip your sprocket clean off.

4 speed manual, all up gears with wet plate clutch.

The engine will be supplied as pictured and sold as a replacement but can vary in colour.

Comes complete with NGK PLUG, FULL WIRING LOOM (FOR PIT BIKE), ENGINE OIL, MIKUNI CARB, AIR FILTER, ENGINE BOLTS, INLET MANIFOLD, GASKETS, OIL COOLER WITH PIPES AND BOLTS. OIL COOLER . THE BARREL MAY BE DIFFERENT COLOUR FROM THE ON EIN THE PICTURE .