2021 Yamaha YZ250X

2-STROKES. 1 GOAL.Engineered with all the reliability and durability you've come to expect from Yamaha, this 2-stroke was born to win Cross Country races.Features may include:ENGINE

• GNCC-Tuned YZ250 Power

Based on the legendary YZ250 249cc liquid-cooled reed-valve-inducted two-stroke engine, the YZ250X utilizes a revised compression ratio, exhaust port timing, revised Yamaha Power Valve System (YPVS) timing and a model-specific CDI unit—all focused on creating a wide, controllable power character ideal for cross country racing.

• Revised Power Valve

The YZ250X features the patented Yamaha Power Valve System—with broader opening timing compared to the YZ250 for smoother power—to combine bottom-end acceleration with strong midrange and eye-opening top-end.

• Narrow Exhaust Pipe

Unique compact exhaust expansion chamber is designed especially for the YZ250X to improve both horizontal and vertical clearance on tight, technical trails while still providing excellent exhaust efficiency.