The Yamaha YZ450FX was introduced in 2016 and is based on the previous-generation (2014 to 2017) YZ450F motocross bike, seeing as the 2018 YZ450F is all-new and therefore doesn’t share as many components with the ’18 YZ450FX. The blue off-roader is designed for closed-course racing such as GNCCs and hare scrambles, therefore it features a number of differences from the 2014 to 2017 YZ450F, such as an electric starter, a wide-ratio transmission, 18-inch rear wheel, sealed O-ring chain, kickstand, and a skid plate.

After mounting a Dunlop D404 street tire to ensure an accurate reading, we put the YZ450FX on our in-house DynoJet dynamometer. The blue off-road motorcycle put 50.5 hp to the rear wheel at 9,250 rpm and 32.4 pound-feet of torque at 6,940 rpm. We refilled the bike with fuel to procure a correct, ready-to-ride wet weight on our automotive weight scales, where the Yamaha weighed in at 262 pounds. Now that we’ve gathered the necessary off-the-trail information we need, we’ll be taking it out into the hills and putting it through some rigorous off-road testing, so stay tuned for a first ride review followed by the full review in the coming…

Continues at the source: Dirt Rider Magazine

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DirtRider Magazine

DirtRider Magazine

Dirt Rider is the world’s largest two-wheel off-road motorcycle brand and the most trusted source for bike testing, product reviews, tech articles, race reports, coverage of industry events, and more. With its consistent flow of digital content, including high-quality video production with expert commentary, Dirt Rider is widely recognized as the leading provider of motocross and off-road editorial coverage.

Unfortunately, Dirt Rider Magazine is no more. Publication ended in January 2018.

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