The 2021 Yamaha WR450F represents a rethinking of its placement in the marketplace. No longer submitting to California’s onerous and pointless Green Sticker regulations, Yamaha has pumped up the motor and revised the chassis. The new WR450F is still quiet and has a USFS-approved spark arrester, so it’s United States Forestry Service friendly, making it an ideal trailbike.
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