Fox 38

Fox 38
Open Bath Cartridge and Adaptor Kit




The best performance modification you will ever do to your fork!

Complete replacement of the damper with our open bath cartridge!

This will make your fork feel like a completely different fork, because it is!

Low speed damping that’s firm but still blows-off to be plush on small bumps,
Reduced fork dive that eases the fork through the travel without harshness,
No more high speed compression spikes and no more bottoming with the optional ABS system.

Low speed compression and rebound adjusters help fine tune the valving as to
how it transitions from low to mid and when the high speed kicks in,
Much more effective than the other dampers attempt to add high speed adjustment without the proper shim stack.

Open Bath Cartridge system for better lubrication, smoother action and virtually maintenance free.

External low speed compression and low speed rebound adjusters

Internal revalvable custom high speed compression and rebound valving.

Internal Anti-dive MidValving.

Optional ABS when using coil conversion kits and when air progression is not enough to prevent bottoming

Optional FvAT/HSB System

Includes the 20 mm Cartridge Damper Kit Insert and fork cap adaptor.

Self install kit, user serviceable and revalvable.

All cartridges are optimized for current travel.
If you plan on changing the travel in the future, please let us know so the proper cartridge tube can be installed.

Talas travel positions are still functional as only the damper side is modified.
It will work in all travel modes, the tune can be set for a best compromise between
the two or we can set it up for the higher travel mode, because this is the more sensitive position generally used for DH. When set to the reduced travel mode we
suggest that you stiffen the suspension up with the clickers, same as you did with the stock damper.

For details on Cartridge click here:

To order tools, revalving kits, and replacement adaptors click here:

Weight grams 238 grams plus oil.
(Fox Fit RC2 Cartridge - 266 grams filled with oil)


• Replacement open bath maintenance free speed sensitive damper assembly, "set it and forget it"
• 20 mm ID damper tube with shimmed 4 port MX style compression and rebound valving pistons
• Upper fork cap adjuster screw with 22 clicks of activated low speed rebound
• Base valve adjuster screw with 22 clicks of activated low speed compression adjustment
• Optional Hydraulic Anti-Bottoming System (ABS) for end of stroke bottoming resistance
• Speed sensitive multi-stage shimmed compression, midvalves and rebound valving
• Custom valved and set-up for each rider with printed set-up charts
• Fork spring and air pressure recommendations help us tune to to your weight riding style
Midvalve kit included with standard cartridge to prevent fork dive, adds low speed compression without
harshness, optional midvalve revalving shim kit and set-up charts available
• Designed to be self-installed or send it to us for installation if you need us to do the install

• Weight approx. 300 grams

Need us to install it for you, just send your fork to us and we will install it for $129 including Spectro 85/150 oil.

*Self install kit assumes good working knowledge of internals and service procedures.

Includes New Interactive Set-Up Chart


• Optional FvAT/HSB
Floating Valving Assisted Threshold High Speed Blow-off System

click here to add it to your cartridge

For the firmer feel without harshness, have that big hit set-up that still feels plush on square edged bumps!

Available for those who want to fiddle with their set-up:
Optional revalving kit for compression and rebound pistons, with revalving set-up charts

Fox 38 open Bath Cartridge Hybrid Coil Conversion with ABS

Fox 38 Cartridge

Purchase Here

Fox 38 Open Bath Cartridge Kit $549

Install the same as 36, new manual update soon.

Download: Hybrid Coil Air Cartridge Installation and Set-up Manual beta(3 MB)

Watch the Install Video(unedited sorry)

Custom valved and set-up to rider weight, ability and riding style

Need to have us install it for you? Ship your fork to us and we can install it for $129 plus shipping, includes Spectro 85/150 oil.

Cartridge replaces damper for fork models: Factory, Performance.


Choose the type of riding that you will be doing so we can custom valve it to your specific needs.

Click here for a description of our definitions

Type of Riding

Choose your fork year that the cartridge will be installed in.

Fork Year

Choose your fork model that the cartridge will be installed in.

Fork Model

Choose your fork travel (mm) that the cartridge will be installed in.
For Talas forks choose the travel you want the set-up optimized for.

Fork Travel

Choose your fork wheel size that the cartridge will be installed in.

Fork Wheel size

Choose rider weight.
Rider weight is without gear, we add 5-7 lbs for DH gear, 7-10 lbs for All-Mtn/Freeride.

Rider Weight

Choose the spring rate/air pressure you will be using which gives you 22% sag.
We need this number to help set-up your fork rebound damping correctly.

Click here for sag setting Tips

Available for Stock Air Spring, Our Hybrid Coil System, Push ACS3, Vorsprung Smashpot

Air Pressure
or Spring Rate

Choose your rider ability for us to set-up the cartridge.

Rider Ability


Coil Conversion Kit Option
Hybrid Coil and Air System

click here:
Hybrid coil and air system

150-180 mm only.

• Optional FvAT/HSB
Floating Valving Assisted Threshold High Speed Blow-off System

click here to add it to your cartridge

For a more supportive feel without harshness, have that big hit set-up that still feels plush on square edged bumps!

ABS/HBO Option

Only needed for coil only versions.
(Push ACS3 needed if not running any air pressure)
(Smashpot has HBO so not needed)
not needed for Air/Hybrid versions

Click here for more details

Only needed for coil only versions of the Fox 38, not needed for Air/Hybrid versions

Vorsprung Smashpot
Vorsprung Smashpot - Fork Coil Conversion System does not require our ABS system, it is provided as part of the Smashpot design.

We prefer to control bottoming with the use of our optional ABS on the damper side.
This will create a more linear spring system without any mid to end stroke ramp-up and will improve deep square edged hits, better control on jump faces, it should be noted that rebound damping cannot properly compensate for progression in spring rate.

Add option here

Price $99.95

Price $99.95, during initial build.

Price $99.95, plus labor($99) to retro fit, send your cartridge to us for installation.




Have us install your cartridge for you

Ship us your fork, we will install your new cartridge,
and you can add additional options to rebuild your air spring with our improved air transfer sealing system, 2015-2017 Models
or the option to replace seals and relube.
includes Spectro 85/150 Oil.

Add options here, does not include shipping back to you, we will adjust your shipping total depending on where you live in the world and send you a Paypal invoice for the difference. It assumes your fork is in good working condition with no physical damage or scratches on the stanchions.

Add each item required to the cart. Price $129


Installation and Service

Price $129, plus shipping difference