For 2015, Yamaha jumped into the off-road market in an even bigger way with the introduction of two all-new machines: the WR250F and the YZ250F. While the WR250F is a trail-specific off-road model, the FX is a GP variant of the hugely popular YZ250F. Lets see if the updated YZ-F and the all-new YZ-FX models can cause some fear in the orange brigade.
The YZ-250F is an easy-to-handle motorcross bike with a quarter-liter engine that has plenty of low-end torque. For the new model year, Yamaha redesigned the 250cc, liquid-cooled, DOHC 4-stroke and added an electric start. The bike uses nearly the same bilateral beam frame that is found on the WR250F. A Keihin 44mm throttle body fuel injection system is tuned for Enduro riding ensures smooth throttle response and easy starting in nearly all conditions. You’ll find KYB air/oil separation Speed Sensitive System forks and a KYB rear shock suspension with Enduro settings. Other details include a 2.1-gallon fuel tank and a claimed weight of 258 lb. for the bike in wet form.
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The FX version is a much more aggressive bike. Te FX differs from the YZ250F by way of electric start, an 18-inch rear wheel, a six-speed transmission, a kickstand, suspension revisions, and frame mounts ready for a skid plate. The YZ250FX uses the YZ250F reversed cylinder, rearward slanted engine with modified fuel injection settings and electric starting. With the optional GYT-R YZ Power tuner, you can adjust both fuel mapping and ignition mapping to best suit conditions and riding ability. The new transmission utilizes a 2-bar, floating shift guide system and a 14mm shift shaft. The benefit is smooth, positive shifts and excellent durability in the event of a crash. Overall, the transmission is well matched to engine output and reduces “driving force” losses. The FX uses the same suspension as its MX cousin with softer settings and slightly more rear wheel travel. Also included is a lightweight aluminum side stand, an engine guard bracket and a puncture resistant 18″ rear wheel. With a maximum noise output of 94 dB, the muffler is the same as the current YZ250F.
All in all, we are pleased with Yamaha’s decision to invest in the off-road segment. The F will arrive in America’s showrooms in April with a price tag of $7790 while the FX version will cost you $100 more.
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