FOX 40 MY21 Mudguard

Description

High-Performance Guard for the FOX 40 MY21+

Uncompromising stability for your high-end DH setup. This FOX 40 MY21 fender will keep up with you from the steepest bike park lines to the roughest DH tracks. Official fender used by the HR Racing Team.

This is the most advanced Fox 40 bolt-on mudguard dedicated specifically to the FOX 40 (MY21+) dual-crown fork. Designed for DH riders who need a professional MTB fender that combines sleek aesthetics with extreme durability on the roughest tracks. It provides a precision fit and structural stiffness that mass-produced, universal mountain bike front mudguards simply do not offer.

Choose Your Ideal MTB Fender Size

Depending on the track conditions and your racing style, you can choose from three dedicated variants of our Fox front mudguard. Whether you need short mudguards for speed or full coverage for rain, you can choose between: Mini, Racing, Universal and Long.

Mini Size

The Fox 40 mini is designed for damp tracks and light mud conditions. With a total length of 24 cm, this small mudguard effectively protects the fork’s seals and prevents debris from flying forward without adding weight.

Racing Size

Racing is a mudguard designed for moderate dirt conditions. It has a total length of 33 cm, and weighs only 142g. It ensures crucial protection for your vision while remaining highly aerodynamic – making it your choice if you’re looking for the best front mtb mudguard for high-speed downhill laps.

Universal Size

Universal is the go-to Fox fork mudguard for varied, wet conditions. With a total length of 41.5 cm, it provides comprehensive protection even in deep mud, which makes it the best choice if you’re looking for ultimate protection.

Long Size

This extended profile provides maximum shielding against high-velocity spray from deep puddles and surface runoff. Its primary function is to manage extreme water displacement, keeping goggles clear and maintaining critical visibility when the trail turns into a stream.

Additional Protection for Your FOX

A signature feature of this front mudguard is the integrated seal protector that shields the stanchions and dust seals. By keeping grit and grime away from the sliding surfaces, you will notice a significant difference in oil cleanliness during periodic fork servicing. This is an essential Fox 40 accessory for any rider looking to extend the life of their high-end suspension.

Uncompromising Tire Clearance (29×2.6 tire)

Unlike generic bike fenders for MTB, our Fox 40 2021 guards follow the exact internal profile of the arch. This ensures that even at full bottom-out, the guard does not interfere with the crown or tire. This Fox 40 mudguard takes up only 2.5 mm under the arch, leaving maximum room for mud, which was tested with 29×2.6 tires.

Reliable Bolt-on Mounting Without Zip Ties

Downhill racing requires a rock-solid setup. This is why our front fenders use a dedicated bolt-on system that utilizes the factory mounting points on the Fox 40 2021 arch. Our unique design provides enhanced stability, eliminating the need for zip ties. This is the mudguard for riders who demand build quality and a rattle-free ride.

“Factory-Like” Fit With No Adapters

The specific design of our Fox 40 fender started with a high-precision 3D scan of the Fox 40 (MY21) fork. This guarantees that the front mudguard fits the arch perfectly, looking like an integral part of your Fox fork rather than a third-party add-on.

Available in Multiple Colors

Our mudguards don’t just come in classic black! You can choose from many other colors, such as graphite, grey, white, red, blue, yellow, green, and many more. Check out all available colors for FOX 40 MY21!

World Cup Tested, Trusted in 55 Countries

For over 4 years, we have been designing mudguards precisely tailored to forks from brands such as RockShox, FOX, Ohlins, Manitou, EXT, and INTEND. Our designs are the result of extensive testing, even in the harshest racing conditions. We collaborate with professional DH and Enduro teams:

• Team Teufelsberg Berlin (2026)
• HR Racing Team (2025, 2026)
• Intense Factory Racing (2025)
• Seton Tuning DH Racing (2024)
• Pole Factory Racing (2023)

Louise Ferguson during DHI World Cup at Bielsko Biała. Photo by @nathhughesphoto.

We are the official technological partner of NICOLAI, POLE, EXT, and INTEND. By choosing our products, you benefit from solutions proven by thousands of riders on trails all over the world.

Mix-and-Match System

We know from experience that every rider has different preferences for mudguard length. That’s why our product is available in four sizes. But that’s not all! If you wish, you can mix and match different front and rear parts of our MTB mudguard, giving you 16 possible combinations.

FOX40 MY21 mudguard – Size Comparison

Dimensions of individual mudguards measured from the top front edge:

• Mini – 24 cm (4 cm front / 20 cm rear)
• Racing – 33 cm (8 cm front / 25 cm rear)
• Universal – 41.5 cm (12.5 cm front / 29 cm rear)
• Long –  52 cm (17 cm front / 35.5 cm rear)

Technical Specification

Material: Polypropylene (PP).

Manufacturing Technology: 3D printing.

Weight: mini – 118g, racing – 142g, universal – 178g, long – 210g.

Available colors: Black, red, orange, yellow and +15 others.

In the box: All required mounting bolts made of A2 stainless steel.