The new KX450F is engineered to win. This championship proven monster has been enhanced with an arsenal of innovative features, and is equipped to tear up the track, straight from the factory.
PNEUMATIC SPRING FORK (PSF)
The PSF uses air instead of a metal coil spring to create less friction and to decrease the bike’s overall weight. It helps the bike react better with the track and gets stiffer with more compression for a sportier feel. Fully adjustable with an air pump included standard with the KX™450F motorcycle.