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40 Factory
FOXNEW1700 MSRP

FOX 40 Factory

The definitive DH race fork with GRIP X2 damper

Specifications

Color
Shiny Black, Shiny Orange
Wheel Size
29" / 27.5"
Travel
203mm
Weight
2745g (29", 203mm, GRIP X2)
Axle
20TAx110mm
Spring
FLOAT EVOL
Adjustment
GRIP X2
E-bike Approved
Yes

Overview

Target locked on the top step of the podium and developed in the crucible of World Cup competition, the 40 is the definitive DH race fork. The GRIP X2 damper now offers more tunability and traction than ever before, ensuring the 40 stays planted in the hot seat. With 203mm of travel and the race-proven FLOAT EVOL air spring, this dual-crown fork delivers unmatched performance for World Cup-level downhill racing. The floating thru-axle design reduces friction for smoother suspension movement, while lower leg bleeders and bypass channels enhance small bump sensitivity and responsiveness.

Features

  • GRIP X2 damper delivers the most tunable, supportive and smoothest descent-focused performance created by FOX, with ultimate descending performance and greater traction.

  • FLOAT EVOL air spring provides optimized progression for World Cup downhill racing demands, with large volume capability for high-speed impacts.

  • Floating thru-axle (20TAx110mm) allows perfect chassis alignment, reducing friction between upper and lower fork legs for smoother suspension movement.

  • Lower leg bleeders with push-button pressure equalization and bypass channels with increased volume alleviate pressure ramping for improved small bump sensitivity.

  • Kashima coating on upper tubes reduces friction and provides premium durability with signature FOX race aesthetics.

  • Air channels allow for easy access to adjust air pressure without removing the wheel for quick trackside tuning.

  • Dual-crown design delivers maximum stiffness and strength for the most demanding downhill tracks and biggest hits at race speed.

  • 203mm direct post mount rotor compatibility with support up to 230mm provides powerful, race-ready braking performance.

  • Available rake options (48mm, 52mm) allow precise geometry tuning for different track conditions and rider preferences.

  • Optional FOX 40 mud guard with sturdy 4-point direct-mount attachment keeps debris at bay during the most challenging race conditions.

  • Factory Series features premium components and finishes for ultimate performance demanded by World Cup downhill racers.

  • Available in striking Shiny Orange Signature colorway or premium Shiny Black finish for podium-worthy aesthetics.

  • Developed and proven in World Cup competition - the gold standard for downhill racing worldwide.

  • High-speed and low-speed compression and rebound adjustments (HSC, LSC, HSR, LSR) provide limitless tuning capability for any track or rider.

  • 1.125" straight steerer tube provides maximum strength and compatibility with modern downhill frame standards.

Real-World Performance

Travel Distance

Pure downhill performance. Built for World Cup tracks and massive hits.

  • Handles drops with confidence
  • Lands jumps with confidence
Weight Impact

Heavier but ultra-stiff - prioritizes descending performance over climbing efficiency.

Damper Technology

Enhanced damping range with more support in the closed position and less resistance when open - perfect for technical terrain.

Chassis Stiffness

Dual-crown downhill stiffness - maximum strength for World Cup racing and the biggest hits.

How we evaluate this component

Product cards, analysis notes, and setup guidance are grounded in public specifications, market positioning, compatibility, and the most likely real-world use cases on trail.

Read the full methodology