Innovative Hare Scramble/GNCC® Engine Design
Based on the championship-winning YZ250F™, featuring Yamaha’s revolutionary rearward slanted, liquid-cooled, DOHC 4-stroke power plant with forward-positioned straight downdraft symmetrical intake, and with an added sixth gear and wide ratio transmission, the YZ250FX™ is an “out-of-the-box” Hare Scrambles/GNCC® competition machine.
The engine is based on the YZ250F, and includes all the same race-winning features: an updated cylinder head, lightweight forged, two-ring, flat-top piston; a shorter, more durable piston pin with diamond like carbon (DLC) coating; a revised piston oil jet, and advanced connecting rod, crankshaft, and counterbalancer designs. Together, the result is improved peak power, power delivery and overall durability.
A wide-ratio 6-speed transmission is used to insure the right gear is available for the wide variety of terrain found in cross-country racing.
Nearly the same bilateral beam frame that is found on the championship winning YZ250F is used on the YZ250FX. The forged section at the swingarm pivot and engine mounting brackets help develop nimble lightweight feeling in the tight technical terrain while still providing stability in fast sections.
Industry-leading, fully adjustable KYB® spring-type fork with speed sensitive damping features revised valving for improved suspension feel and balance. The linkage type rear suspension features a KYB rear shock with settings optimized for cross country racing.
Cross Country Features
With the electric starting system, a 2-gallon fuel tank, rugged plastic skid plate, 18-inch rear wheel and XC racing tires, the YZ250FX is ready to win right out of the box.
GYTR® Power Tuner Ready
Accessory GYTR Power Tuner lets owners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and race conditions in a matter of seconds with the push of a few buttons.
Quick-adjust clutch, wide 55mm platform footpegs, four-position rubber- mounted handlebar clamps, aluminum handlebars, and a side stand are standard for added rider convenience. The YZ250FX is also pre-wired for an optional radiator fan for the most grueling conditions.
The air cleaner cover helps prevent contact with the quick-release quarter-turn Dzus® air box fasteners for tool-less access to the air filter. Thanks to a WR®-style fuel level sensor in the tank, the YZ250FX includes a convenient fuel level along with an engine warning indicator on the handlebar.
Sealed O-ring Chain
High-quality O-ring chain is tough and durable.