Fox Announces New 38 Fork and Refreshes Lineup For 2021

Date Apr 7, 2020

Fox Suspension's 2021 lineup gets a brand new member with the addition of the all-new 38. Pitched as a beefed-up big brother to the 36, it includes a number of unique touches, including an elliptical head tube, lower leg channels, and air bleed ports. Read on after the break to get the full rundown, as well as all the other updates to the Fox lineup.

One fork family bound by a common bond of race-ready performance, driven to help you deliver your very best. In 2005, we changed the game with the introduction of the 36, pioneering a new category in mountain bike suspension—and Enduro was born. The very same year, we introduced a big brother into the fold with the 40, forever changing the landscape of downhill racing—defying both gravity and expectations of what dual crown suspension should be. 15 years and countless world cup and EWS wins later, our award-winning suspension family is poised to redefine the game once again with the brand new 38. This rebellious middle child is a hard-hitting, long travel enduro menace, set to carry on the evolution and winning traditions of its champion pedigree.




Floating axles might look similar to other axles, but in fact they offer a distinct performance advantage due to their unique ability to match the exact width of the fork’s wheel mounting surface precisely to the front hub flange spacing, thus creating perfect chassis alignment and eliminating unwanted friction between the upper and lower fork legs. Floating axles provide much smoother suspension movement throughout the entire range of the fork’s travel, notably improving sensitivity and overall ride quality.


The all-new 36 and 38 come equipped with a new quick-release lever operated patent-pending floating axle system, combining the benefit of a floating axle with the ease of a tool-free quick-release. With this system, spacing is locked in via a floating sleeve, allowing repeated front wheel removal and reinstallation while maintaining perfect fork alignment. Floating sleeve positioning comes preset from the factory so if you are unsure of how to operate the floating axle system or simply don’t want to bother with it, you can just install the front wheel and get on with your ride.

Available optionally is the new Kabolt-X, a lightweight bolt-on floating axle exclusively for the all-new 36 and 38 that not only shaves grams but also increases torsional stiffness via its sleeveless, single-sided pinch bolt design. The all-new 40 utilizes a double-pinch bolt floating axle design to provide maximum stiffness for Downhill racing applications. Chassis alignment must be reset each time the front wheel is removed and reinstalled on both the Kabolt-X and 40 floating axles, but the end result is the same – perfect alignment and perfect performance.


As a fork compresses, the air volume within the lower legs decreases, increasing air pressure. The more the fork compresses, the more pressure increases. This effect can have the unintended consequence of preventing full travel from being achieved. Our lower leg channels help alleviate this issue by dramatically increasing air volume within the lower legs and thereby reducing the amount of additional unintended pressure ramping.


Another benefit of these channels is that lower leg bath oil is circulated to the upper reaches of the lower legs, continuously lubricating the foam rings and bushings as the fork compresses and extends through its travel.


Our lower leg bleeders allow for atmospheric pressure equalization at the simple press of a button. Pressure build-up in the lower legs dramatically decreases fork performance, preventing full travel from being achieved, and diminishing small bump sensitivity and responsiveness



Stiffness-to-weight is the ultimate metric for bicycle design. Engineers invest countless hours poring over every ounce of material in an effort to optimize this critical ratio. The all-new 38 pulls out all the stops, shaving every possible gram while making sure not to compromise stiffness or strength requirements of modern, hard-hitting long-travel Enduro riding.


Modern frame designs and geometry trends require modern suspension design solutions. The arch design of the all-new 36, 38, and 40 is designed to pair perfectly with modern Enduro and Downhill bikes. Head tube profiles have grown larger and larger, and fork offsets shorter and shorter. Our new arch shape takes this need into account by jutting forward to provide ample headtube clearance at full compression. State-of-the-art computer modeling techniques helped us to create an organic lower leg shape that optimizes stiffness with the absolute minimal amount of material.


The 38’s elliptical steer tube is one of many ways we’ve further optimized stiffness-to-weight, placing more material only where it is needed, and eliminating every ounce of it where it’s not.


Our GRIP2 damper is the benchmark for unparalleled ride quality and ultra-precise on-the-fly adjustability. For 2021, we’ve taken GRIP2 to the next level by adding our patented VVC technology to the compression circuit. VVC is a proprietary variable valve control system that allows for external fine-tuning of suspension performance. GRIP2 achieves with the twist of a knob what typically requires the time consuming and complicated task of completely disassembling and reassembling the fork.








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2 years, 2 months ago
+1 Timer

That is a lot of cool engineering, not sure how well it can justify the eye-watering price when I can spend the same money on Marzocchi stuff and have it all custom tuned to fit me and my bike perfectly by tuners who have been working with those damper designs for decades... legitimately tough call, because I'm finally going to be up for a new bike when these start to show up as OEM take-off options..


2 years, 2 months ago
+1 Jenkins5

Any intel on what they did to fix the creaking CSUs? Maybe since they (the industry) think ebikers ride harder than us meatmotors the 38 will be beefed up to an acceptable level.


2 years, 2 months ago
+1 Pete Roggeman

I'm guessing that's what the oval steerer tube might be about - it's a combination of tolerance stacking & cantilevering a lot of load through a fairly small surface (and aluminum's CTE makes this a bit tougher).
Details like this are why looking at the price, and my own personal scale when I put my tubby self on there, I find myself looking at the 'lesser' products in the Fox lineup (Marz Z2) and wondering if I'd be better off getting custom tuned dampers and sticking with beefier suspension parts, and spending the difference elsewhere to make back the weight (carbon cranks).


2 years, 2 months ago
+3 Jenkins5 4Runner1 Tremeer023

There doesn't seem to be much (if any) correlation between price and creakiness. The relatively inexpensive Suntour Durolux and DVO Diamond are not known for creaking, while the top-money fox forks are notorious. Then again, the expensive Öhlins forks also have a good rep for no creaks.

TBH, i don't see much point in buying aftermarket Fox stuff unless it comes at a huge discount. The MSRP seems unreasonable considering the same stuff as part of a complete bike isn't much more expensive than the competition.


2 years, 2 months ago
+1 mike



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