fox racing shox 38 float 27.5 grip performance boost fork matte black, 170mm, 44mm rake fox racing shox driven by the needs of the world's hardest-hitting enduro athletes, the fox 38 float 27. 5 grip performance boost fork boasts the stiffest chassis and smoothest travel we'll likely ever find in a single-crown fork. offered in 160 - 180mm travel options, the 38 float is fox's most aggressive enduro fork and withstands trail usually reserved for downhill bikes. along with its oversize 38mm stanchions, the fork features a unique elliptical-shaped steerer tube along with a beefed-up crown and arch. these design elements work together to minimize flex in the fork's chassis when we're barreling down fast straightaways and plowing through rocks and roots. simply put, the fork holds its line better and provides a boost of confidence when the trail gets seriously rough. the 38 also uses a new floating axle design that compensates for imperfections in hub tolerance, ensuring each side of the lowers is perfectly aligned to minimize binding and friction as the fork moves through its travel.