How Much Power Does The 2018 Yamaha YZ450FX Make? | Dirt Rider

How Much Power Does The 2018 Yamaha YZ450FX Make?

We put the blue off-road bike on our dyno to find out

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.

2018 Yamaha YZ450FX torque and horsepower

The 2018 Yamaha YZ450FX puts out 50.5 hp at 9,250 rpm and 32.4 pound-feet of torque at 6,940 rpm.

Will Steenrod

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 weeks.

TECH SPEC

 
PRICE $8,999
ENGINE 449cc, liquid-cooled, single-cylinder four-stroke
TRANSMISSION/FINAL DRIVE 5-speed/chain
MEASURED HORSEPOWER 50.5 hp @ 9,250 rpm
MEASURED TORQUE 32.4 lb.-ft. @ 6,940 rpm
FRAME Aluminum twin-spar
FRONT SUSPENSION KYB Speed-Sensitive System (SSS) coil-spring fork adjustable for rebound and compression damping; 12.2-in. travel
REAR SUSPENSION KYB shock adjustable for spring preload, rebound, and compression damping; 12.5-in wheel travel
FRONT BRAKE Nissin single 270mm disc w/ twin-piston caliper
REAR BRAKE Nissin single 245mm disc
RAKE/TRAIL 26.3°/4.5 in.
WHEELBASE 57.7 in.
SEAT HEIGHT 38.0 in.
FUEL CAPACITY 2.0 gal.
MEASURED WEIGHT 263 lb. wet
AVAILABLE Now
CONTACT yamahamotorsports.com

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