Tag: fox 38

FOX 38 Forks

2025 FOX 38 Forks

Build with robust 38mm stanchions the FOX Float 38 fork lineup is ready for really aggressive trail, enduro and all-mountain riding. Available in both 27.5″ and 29″ with travel from 160mm to 180mm and the new GRIP X2 damper the 2025 FOX 38 fork leaves nothing on the table.

Shop In-Stock and Available FOX 38 Forks below

Don’t see what you’re looking for? Questions on spec, performance or availability? Contact us today!

Keep reading for FOX 38 Fork details. Learn about the GRIP X2 damper, the FOX 38’s air spring and volume spacers, brake and wheel specs as well as other details on the FOX Float 38 lineup.

  • 2025 FOX 38 GRIPX2 29 Shiny Black Model Numbers 160mm 910-21-307 170mm 910-21-285 180mm 910-21-283
  • 2025 FOX 38 GRIPX2 29 Shiny Orange Model Number 170mm 910-21-284

FOX 38 Details

FOX 38 GRIP X2 Damper Details

GRIP X2 Adjustments:

High Speed Compression: 8 clicks
Low Speed Compression: 18 clicks

High Speed Rebound: 8 clicks
Low Speed Rebound: 16 clicks

FOX GRIPX2 Damper Details

New for 2025 FOX’s longer travel and more aggressive forks have been fit with the new GRIP X2 damper.

The GRIP X2 replaces the previous GRIP2 damper on the top tier Factory Kashima FOX 38 forks. The GRIP X2 damper is designed with mechanical differences giving it an on trail performance advantage to the previous GRIP2 dampers.

What are some of the notable updates?

Bigger is Better. Well, with Base Valves!

On the GRIP2 damper the base valve measured 20mm. With the revised GRIP X2 FOX increased the base valve to 24mm.

FOX also took the GRIP2’s 7 valve stack and increased it on the GRIP X2 to a 23 count valve stack. This improves the overall tune capacity with the goal of improving the fluid engagement through the damper.

FOX 38 Air Spring Details

FOX 38 Air Spring Adjustments: PSI and Volume Spacing

Air Spring:

Suggested PSI from 72 PSI for 120-130lb rider to 120 psi for 240-250lb riders.
MAX PSI is 120 psi.

Volume Spacers:

160mm Travel FOX 38
Factory Installed Volume Spacers: 3 (eMTB adds 1 spacer to Factory Installed)
Maximum Volume Spacers: 6

170mm Travel FOX 38
Factory Installed Volume Spacers: 2 (eMTB adds 1 spacer to Factory Installed)
Maximum Volume Spacers: 5

180mm Travel FOX 38
Factory Installed Volume Spacers: 1 (eMTB adds 1 spacer to Factory Installed)
Maximum Volume Spacers: 4

FOX 38 Axle and Brake Mount Detail

More FOX 38 Details:

Kabolt x 110mm Boost Thru Axle

Rake (Offset): 29″ 44mm, 27.5″ 44mm

Rotor Sizes: Direct Mount 180mm, Max Rotor Size 230mm

Crown: All 58HT except 910-21-279 170mm that has a 68HT

Suspension from BikeCo.com

Why Riders Choose BikeCo.com for Suspension

There are many reasons riders choose to purchase suspension from BikeCo.com. Two of the most notable are our proprietary BikeCo Pro Tune services available on FOX products as well as our unbeatable after-sales service and setup availability.

FOX forks and shocks have distinguished themselves as class leaders across all MTB disciplines. With a wide range of dampers, adjustments, travel options as well as chassis riders have options to dial in their bike. But, working with BikeCo.com you’ll get more out of your new fork or shock and it’s something the competition simply can’t offer: Access to our team’s combined expertise on setup and tuning.

Modern suspension offers a range of adjustments. PSI, Volume Spacing, Compression – possibly High and Low Speed as well as Rebound – again possibly high and low speed.

While many manufacturers offer basic setup points the magic is being able to fine tune the fork or shock to accommodate your riding specifics. Working with the team at BikeCo.com riders are able to more quickly dial in a setup as well as understand where their setup is likely to advance as riding speeds and confidence increase.

Clients purchasing Suspension products from BikeCo.com will take delivery with a personalized setup sheet with suggestions for a starting point (as well as somewhere to come back to if you decide to spin all the knobs during your setup pedal in front of the house!).

Our team will then reach out at intervals with questions to help us understand how the fork or shock works for your individual riding. These intervals are designed to allow you a couple rides to quantify your impressions and then readdress minor changes to the setup. Of course, our team is available at any point in between if you have questions on your suspension.

Since 1999 BikeCo’s suspension experts have worked with a wide range of riders. From World Cup Level Pros to brand new riders. With this experience we are unmatched at setting up bikes performance, so the rider isn’t fighting the tune but simply concentrating on riding the trail.

Our team works together with our suspension tuners and BikeCo owner Joe Binatena to ensure clients get the best setup and tune concepts in the industry.

We will help you define how one adjustment may effect another setting as well as help you understand how your suspension is interacting with other components. Don’t get lost spinning dials when you can work with the best and have a thorough understanding, or simply someone to tell you which dials to turn if you’re that rider!

PSI, Ramp Rate, High and Low Speed Compression, High and Low Speed Rebound, Cockpit Setup, Brake Setup, Tire Pressures and Sidewalls, Riding Positions, Terrain – a lot of things going into really dialing in how your bike feels through the chunk, into corners and under power.

With experts working in your corner why would you shop MTB or eMTB Suspension anywhere but BikeCo.com?

BikeCo Pro Tune Service

Want to take your FOX Suspension to the next level? Why not have a personalized tune to provide a better setup range based on your specifics?

Check out Cody Kelley and BikeCo Owner Joe Binatena discuss Pro Tune Advantages or scroll down to contact our team with questions on BikeCo FOX Pro Tune Services.

BikeCo Pro Tune Suspension

  • FOX Pro Tunes by BikeCo.com

    Take your riding to the next level with a proprietary suspension tune from BikeCo.com on your FOX fork or rear shock.

  • FOX Suspension is an acknowledged class leader across all MTB and eMTB disciplines. But, FOX is building suspension for the masses and BikeCo is Pro Tuning that suspension for you!

    What's that mean? FOX suspension is designed with a functional range for nearly any size rider with any skill set. This means even with many clicks of adjustment you might find it a little tough to find the perfect sweet spot. When you have suspension that has to accommodate riders that may be twice the size of each other and with huge variations of confidence, riding style and speed that's not a knock on FOX, it's just a reality.

    BikeCo Pro Tune Suspension takes the unbeatable FOX performance and narrows the performance window based on your specifics. Size, riding style, terrain, aspirations, aggresion and ground speed as well as what bike you're riding all go into our BikeCo Pro Tune design considerations.

    Our Pro Tune services include a range of proprietary lube and damper oil selections additive packages for performance across a wide range of altitude and temperatures based on your weight and riding style. Custom internal tuning considerations are used also based on the end user (none of which compromise your warranty). Improved damper bleeds, upper and lower fitment considerations, etc - all gained from years of working with the faster racers at the highest level and adapting them for every level of rider.

    In fact, while named Pro Tune it's often newer riders who benefit most from having tuned suspension (and having access to the BikeCo team to help them fine tune the setup). Why try to learn to ride AND fight a poor setup? Poor setup hinders rider advancement, confidence and fun. Don't tolerate that!

    BikeCo Pro Tune services are available on new or used FOX forks and shocks. If you're purchasing new suspension we offer a price incentive at time of purchase for up to 6 months after your purchase!

    More questions? No problem. Contact our team for more details on these tuning options. Remeber, #EveryClickCounts


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  • Question on availability? Spec? Compatibility?
    Our team will be in contact ASAP!

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FOX 38 PN

2025 FOX 38 Part Numbers

Wheel Size: 27.5″
Travel: 170mm
Damper: Grip X2
Offset (Rake): 44mm
Axle: Kabolt X x 110mm
Steerer: 1.5 Taper
Crown: 58 HT
Color: Shiny Black
FOX MPN: 910-21-308
EAN: 0821973490816

Wheel Size: 29″
Travel: 160mm
Damper: Grip X2
Offset (Rake): 44mm
Axle: Kabolt X x 110mm
Steerer: 1.5 Taper
Crown: 58 HT
Color: Shiny Black
FOX MPN: 910-21-307
EAN: 0821973490717

Wheel Size: 29″
Travel: 170mm
Damper: Grip X2
Offset (Rake): 44mm
Axle: Kabolt X x 110mm
Steerer: 1.5 Taper
Crown: 58 HT
Color: Shiny Black
FOX MPN: 910-21-285
EAN: 0821973490571

Wheel Size: 29″
Travel: 170mm
Damper: Grip X2
Offset (Rake): 44mm
Axle: Kabolt X x 110mm
Steerer: 1.5 Taper
Crown: 58 HT
Color: Shiny Orange
FOX MPN: 910-21-284
EAN: 0821973490465

Wheel Size: 29″
Travel: 180mm
Damper: Grip X2
Offset (Rake): 44mm
Axle: Kabolt X x 110mm
Steerer: 1.5 Taper
Crown: 58 HT
Color: Shiny Black
FOX MPN: 910-21-283
EAN: 0821973490588

Wheel Size: 29″
Travel: 170mm
Damper: Grip X2
Offset (Rake): 44mm
Axle: Kabolt X x 110mm
Steerer: 1.5 Taper
Crown: 68 HT
Color: Shiny Black
FOX MPN: 910-21-279
EAN: 0821973490632

FOX 38 Owner’s / Tuning Guide (Link opens in a new tab and takes you to FOX’s site)

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Extra FOXY Mondraker FOXY Carbon…

Mondraker FOXY with FOX 38 and Float X2

Well, there’s good and then there’s great I suppose right? For me as a bigger rider I was pushing the stock FOXY suspension outside of it’s performance window – so it was time to make an extra FOXy Mondraker FOXY! Is this a total indictment of the Ohlins? By no means – but – wanting a little bit more punch out of my bike the FOX Float 38 GRIP2 and Float X2 were awesome additions to the FOXY.

You can watch and read about the riding conditions that led to this part swap here (essentially Ohlins RXF was pushed past its mid-stroke and rebound design parameters).
And watch and read about my extdended first ride thoughts on the Mondraker with Ohlins here. (it was SO close, but, I’m 100% happier with what you’ll see below).

I’ve got another write up coming with some extended ride details on the Mondraker FOXY with a FOX 38 and X2 that will go into more details – but for now enjoy a handful of shots and some basic details of this suspension swap.

8/31/22 Update: Check out my extended ride review on the Mondraker FOXY Carbon here!

Mondraker FOXY with FOX Float X2

Extra FOXY, Mondraker FOXY Carbon with 170mm Fork

Why did I swap the RXF 36 M.2 for the FOX 38 and not a FOX 36? I wanted the ability to run the fork at 170mm.

While this is possible with the Ohlins 36 the FOX 36 has a max travel of 160mm. The FOX 38 is a bit heavier fork, but not a ton.

This bike with the Ohlins suspension weighed in at 30.8 lbs. With the FOX 38 and the Float X2 the FOXY weighs 31.8 lbs. 1 lb overall on an enduro bike isn’t even a conversation to me until we get closer to 33 lbs maybe?

The GRIP2 fork has several design advantages to me as well. FOX’s GRIP2 has high and low speed rebound  (compared to the RXF low speed compression) as well as more finite adjust-ability in the high speed compression.

Float X2 on Mondraker FOXY Carbon

Like the fork the Ohlins rear shock was struggling to slow the rebound enough at the higher end of its PSI range. This created a harshness, particularly at speed.

Changing the spec to the FOX Float X2 I regained the rebound control and was able to increase the mid-stroke support as well. The X2 features high and low speed rebound as well as high and low speed compression and a climb switch. I haven’t used the climb switch at all on the Mondraker FOXY (either with the Ohlins or the FOX) as it pedals so efficiently in the open mode and having it remain open has benefits in tricky climbing conditions.

I’ll go into it further in another text – but I had an opportunity to run two different tunes on the X2 already. One that was for another bike with somewhat similar attributes. And that one was HORRIBLE. But, when I put on the X2 with a tune designed for the Mondraker Zero Suspension it was heavenly. (I almost wonder if Joe was just proving a point to me? hahaha…)

Mondraker FOXY FOX X2 Float 38 with Nate

Again, changing from the Ohlins to FOX suspension on my FOXY isn’t something that every rider will need to consider. But, as a heavier rider (around 270-275 right now – haven’t really been watching it too much this year with all the other stuff going on in my world and family haha…) and a rider who prefers punchy, supportive suspension the Ohlins was outside its design parameters.

For lighter riders the Ohlins versus FOX debate is a question on how plush you’re looking to go versus how much punch you prefer.

While the Ohlins was close, going to the FOX suspension was an eye opener on the difference between “almost” and “dialed” in the MTB world.

Much more to come on this 170mm fork 150mm rear travel Mondraker FOXY Carbon – or, since I guess the 170mm fork 160mm FOXY is the SuperFOXY I suppose I’m going to call this bike the Mondraker Extra FOXY? I mean, gotta tip my hat to the 38 and X2 unlocking the bike for me!

More to come with an extended ride review of the Mondraker FOXY Carbon with FOX 38 and Float X2!

Mondraker FOXY Carbon with FOX 38

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