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!
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 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.
Weight grams 300 grams plus oil.
Replacement open bath maintenance free speed
sensitive damper assembly, "set it and forget it"
Weight approx. 300 grams
Need us to install it for you, just send your fork to us and we will install it for $100 including Spectro 85/150 oil.
*Self install kit assumes good working knowledge of internals and service procedures.
For the firmer feel without harshness, have that big hit set-up that still feels plush on square edged bumps!
Fox 40 Open Bath Cartridge
Fox 40 Fork cap adaptor (preproduction)
2020 Fox 40 with optional ABS and optional FvAT/HSB installed
Cartridge Cut-away View
Compression, Rebound and Midvalve shown above.
Fox 40/Bomber 58 Open Bath Cartridge Kit
including fork Cap Adaptor
Self install instructions are still being produced, if you choose
to self install the cartridge use the Boxxer 35 install manual for
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 $100 plus shipping, includes Spectro 85/150 oil.
Add option here
The coil kit supports about half the rider weight and the air spring makes up for the other half of the support needed. Now the air side can be used to fine tune the spring rate needed as well as adjust the ride height for different riding conditions, also the air ramp-up can be controlled with the traditional tokens or aftermarket ramp up adjustment devices. The advantage of the hybrid system is versatility, performance, weight, and cost savings. It simply drops into the damper side, only adds about 178 grams(250 gramsfor 8 inch fork), it solves most of the air spring issues in the first half of the stroke, where the friction forces and small bump compliance are critical, more supportive, it fills in the midstroke wallow of the air spring and corrects the ride height with physical adjustable preload. When the fork gets deeper in the stroke the spring force is more dominant and the stiction and air spring concerns are not as noticeable, so the final spring force is not as sensitive as long as it is more linear and removal of the tokens is now possible with proper damping. The air spring can be set to very low pressures and as linear as possible where it is nearly negligible. Ride height and spring rate can be fine tuned with the air spring pressure which is very helpful when in between spring rates and allows for different riding conditions. The equal force system is a very important feature because now the fork compresses equally with about the same spring rate in both stanchions, a single spring system causes the unsprung side to compress ahead the spring side because of the flexibility of the crown and lowers, this causes stiction in the first half of the travel which is more of a contributor than the air spring stiction. The abs system that we sell as an option to our damper and the Vorsprung system is not necessary because of the air hybrid ramp up is sufficient to prevent bottoming. We feel because of all these advantages, that ripping out the air spring for 160 mm fork and throwing in a long heavy coil system is like fixing your fork with a sledge hammer and all it needs is a little tap here and there. For our heavier riders we can simply drop a coil spring on top of the air side piston and create the same hybrid air system with more spring rate and ramp up as needed.
Only needed for older coil forks, not needed for Hybrid Coil/Air Forks
Add option here
Have us install your cartridge for you
Ship us your fork, we
will install your new cartridge,
Add option 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. Iit 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 $100
The Avalanche Advantage over the the Fit RC2 cartridge:
A larger (20mm vs 15.5mm) 4 port rebound valve that has more low to midspeed transition control and optional high speed shim configurations for different spring rates and rider conditions.
A midvalve with user tunable shims/valving that provides anti-dive feature while still blowing off without low speed harshness on small bumps.
The same DHF proven design (20 mm) 4 port compression valve with optional revalving charts and shims available to fine tune your fork for your individual riding conditions and ability.
User serviceable, all parts are available here at Avalanche to service or modify the internal set-up.
Revalving kits can be purchased from Avalanche or any suspension tuning shop that carries standard 6 mm shims.
High speed adjustment is at best a compromise of the original shim stack, depending on the high speed spring preload adjuster rate and where the pressure is applied
on the shim stacks you can get less than desirable results in damping feel, i.e. preloading the outside rim of the shim may make the high speed stiffer,
but also creates mid and low speed harshness in the damper.
The original RC/RC2 large compression adjuster protrusion at the bottom of the fork is eliminated and cleanly redesigned.