An updated chassis and significant increase in bushing overlap adds 20% torsional stiffness over the previous 36, approaching the steering responsiveness of the 38.
A new compliant FLOAT air spring and inboard bypass channels make 36 considerably smoother throughout its travel, especially when engaged at higher loads and at faster speeds.
Generatively designed and optimised by FOX engineers, the new 36 arch wraps around the lowers to increase torsional stiffness of the fork by a full 20%. This now gives the 36 a veritable 87% of the torsional stiffness found on the 38 (up from 75%), while remaining 275g lighter than the 38.
A large enough bending force—such as hitting a large rock or root at high speed—can cause the air spring to bind to the inside of the stanchion when the fork is compressing through its travel.
The redesigned and compliant FLOAT air spring decouples the stanchion from the air shaft, allowing the piston to move with the fork while under these bending loads, rather than resisting them.
The result? Smoother suspension action overall, especially when the fork is experiencing high loads from speed or weight of a rider.
As the fork is loaded sideways (such as running over an obstacle on the trail), that bending force is translated from the lower leg to the stanchions through Teflon-lined sleeves called bushings. “Bushing overlap” refers to the distance between upper and lower bushings in each leg.
In suspension forks, this greater overlap reduces friction between the stanchions and lower legs throughout the stroke. By adding an additional 30mm of bushing overlap over the previous 36, chassis friction is reduced significantly for a smoother-feeling fork overall, as well as adding fore-aft stiffness for a more stable-feeling at higher speed.
Bypass channels help curb pressure ramping for increased small bump sensitivity, as well as recirculating oil to lubricating bushings and seals. By relocating the bypass channels from the aft side of the fork to the inboard side, they are now out of the fore-aft load path. This further reduces friction and wear, as well as increasing overall sensitivity of the fork.
Trail riders no longer need to choose between a descent-focused damper or a lightweight endurance damper. GRIP X exudes the exemplary descent performance of GRIP X2, refined for less weight, easier set up and an easy access firm mode for pedalling efficiency.