Proven on the World Cup Downhill circuit, the 40 remains the fork riders trust when everything is on the line. Now with benefits of the Glidecore air spring and revised GRIP X2 damper, it offers more tunability and traction than ever before.
THE DOWNHILL RACER'S EDGE
SUPPORT WITHOUT HARSHNESS
Greater traction and even more control at speed. GRIP X2 is the most tunable, supportive and smoothest descent-focused damper ever created by FOX.
BUILT TO HOLD THE LINE
Generative designed arch maintains the 40’s steering responsiveness. Relocated bypass channels contribute to even more smoothness and sensitivity at speed.
SMOOTH UNDER PRESSURE
The seamlessly compliant FLOAT Glidecore air spring reduces friction and bind by moving with the fork under dynamic load for smoother suspension action.
New for 2027: We've completely overhauled the 40 from the damper, to the air spring, down to the lower leg, with the goal of making it the fastest 40 from top to bottom.
- Updated GRIP X2 and GRIP damper options
- New Glidecore vertically and horizontally compliant air spring with MCU bottom-out bumper and increased negative volume
- New generative designed lower legs (29" only)
- Updated bleeders, relocated bypass channels (29” only)
- New 40 Mud Guard with GD4 mount (29” only)
- Splined cassette tool air side top cap
Note: 27.5" Fork variant uses our previous-gen Fox 40 lower leg assembly.
| SERIES | Factory |
| CHASSIS | Standard |
| WHEEL SIZE | 29in or 27.5in |
| TRAVEL | 203mm (can fit a 190mm airshaft) |
| DAMPER | GRIP X2 |
| AXLE | 20TAx110 |
| STEERER | 1.125 Straight |
| UPPER TUBE FINISH | Kashima |
| AIR CHANNELS | Yes |
| BLEEDERS | Yes |
| FLOATING AXLE | Yes |
| ROTOR SIZE | 200 direct Post Mount, Up to 230 compatible |
| MUD GUARD MOUNT | Optional FOX 40 Mud Guard with sturdy 4-point direct-mount attachment |
| AIR SPRING | FLOAT EVOL GlideCore |
| STARTING WEIGHT | 2745g (40, 27.5, F-S, 203, Grip X2) |
