tons or couplers. The power is what it is—unless
you plug in the GYTR Power Tuner. This is a
hand-held device sold through Yamaha’s accessory division that allows you to mix and match
different fuel deliveries and ignition advances.
It sells for a little under $300 but is money well
spent. The Power Tuner is easy to use and will
work on any fuel-injected, closed-course Yamaha.
We appreciate the Yamaha’s power, but what
we really love is its suspension. The fork remains
our overall favorite. It’s the KYB SSS fork with
a good, old-fashioned coil spring in each leg.
Everything else in the 250 world has gone a little
weird. There’s the single-sided coil-spring SFF
fork on the Kawasaki, the Showa TAC air fork on
the Honda, the KYB PSF2 air fork on the Suzuki
and the AER 48 fork on the KTM and Husky.
The Yamaha SSS is the only fork that uses the
most proven, trouble-free design with two coil
springs. The performance of some air forks has
progressed to the point where they compare very
favorably with spring forks, but they still require
more service and a somewhat painful setup process. Air forks still change with heat and force
you to carry around one more thing (i.e., an air
pump) on every single ride. If you do everything
right and you’re a little lucky, you’ll make one
work as well as every single Yamaha fork does
without being touched.
MX TEST: 2017 YAMAHA YZ250F
Last year the front rotor size was increased.
The Yamaha’s brakes are very good.
Yamaha's YZ250F has one of the strongest engines in its class and has
been a strong point of the overall package since its introduction. For
2017 Yamaha focused on improving the powerplant's durability.