Yamaha announced its 2021 YZ motocross lineup, including a redesigned YZ250F, and new Monster Energy Yamaha Racing Edition versions of the YZ250F and YZ450F.
Also returning for 2021 are the two-stroke YZ125 and YZ250, and the YZ85 and YZ65 youth models.
2021 Yamaha YZ250F

The 2021 YZ250F receives a new cylinder head with an updated intake port shape, revised exhaust camshaft profile, a new silencer and an updated ECU. Yamaha claims the changes produce strong mid- to top-end power and more peak power while producing strong low-end torque. The intake is all-new, with intake ducts added to the air box lid for added air flow. Yamaha also added a new high flow air filter and reshaped the air cleaner boot while increasing the diameter of the throttle body joint. Yamaha revised the chassis, changing the lateral beams and engine cradle tube thickness to fine-tune rigidity balance. The engine mounts, top triple clamp and front axle were also modified for rigidity. Both the front and rear suspension received new damping settings, with Yamaha claiming improved cornering performance, traction and bump absorption. The brakes were also updated, with a more rigid front caliper, a more compact rear caliper, and new discs and pads.
Also receiving changes are the crankcase, cam chain and tensioner, water pump, clutch basket and gears 3, 4 and 5, all to improve overall durability.

2021 YZ450F and YZ250F Monster Energy Yamaha Racing Editions

The Monster Energy liveries are insp...