“THIS WEEK IN MXA WITH JOSH MOSIMAN:” SOLVING OUR YZ250F COMPLAINTS

We weren’t ecstatic that the 2024 Yamaha YZ250F gave up some of its awesome low-to-mid power in search for more top-end, wo we turned to master tuner Jamie Ellis for help. He spend some time on the Twisted Development’s dyno making maps for the Vortex ignitions and crafting a new airbox design to increase the air velocity to bring back the low-to-mid power that most YZ250F racers love.