These two machines are equally matched for two reasons: (1) The KTM 250SX is much more powerful from idle to the point where it signs off. The KTM 250SX powerband requires more skill in managing throttle, rpm, clutch and shifting, while the YZ250 is easy-peasy. The YZ250 isn’t as powerful from low-to-mid as the KTM, but it is easier to keep in the meat of its mid-and-up rpm range. In short, Yamaha and KTM remain in a stalemate. On the track, the 2022-2023 engine feels identical to the 2021 YZ250. The YZ250 is easier to ride (for a two-stroke) off the crack of the throttle, and it pulls steadily up to the 8800-rpm range. Instead, they straightened the intake tract to improve air airflow, but we didn’t think it added much of anything to the powerband in motion. We aren’t upset that the Yamaha engineers didn’t increase the compression ratio, raise the ports or alter the power valve timing. The Yamaha’s strength lies it its friendlier powerband. If Yamaha wanted to engage in a horsepower war with the Austrian bike, they would have no choice but to pursue KTM’s stronger pull from idle to the middle, but going all-out to match the KTM 250SX would be a mistake. The YZ250 jetting specs have been spot-on since the N3EW needle was introduced in 2007. On low-to-mid thrust, the KTM displays a much more race-ready amount of power. Tailored more for racing than trail riding, the KTM 250SX hits hard, revs fast and signs off early. Q: HOW DOES THE YAMAHA YZ250 RUN ON THE TRACK?Ī: The Yamaha YZ250 two-stroke is known for being smooth and manageable, while their major competition (KTM) features an aggressive hit and exhibits considerably more torque and midrange power. The 2023 Yamaha YZ250 two-stroke engine has smooth, easy-to-ride, manageable power. The rear brake got a smaller 240mm rotor (down from 245mm in 2021). The front brake pads have a surface area that is 30 percent greater. The more rigid caliper improved brake pad contact, because the caliper didn’t flex as much under the pressure of hard braking. The front brake caliper’s piston was enlarged from 22.6mm to 25.4mm, while the caliper’s rigidity was increased by 30 percent. ![]() New in 2022, the YZ250 was spec’ed with the same brakes that come on the YZ250F and YZ450F. A: Two-strokes are much lighter than four-strokes, which makes them easier to bring to a halt, but they also lack a four-stroke’s engine braking, which means you have to rely on the brakes more to slow a two-stroke down.
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