2008-2015 Marzocchi 55 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 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.

Complete damper replacement with an open bath 20 mm cartridge conversion kit
Revalveable Compression, Rebound and Midvalves.
Adjustable low speed compression and rebound

ABS cone/lower casting adaptor, oil lock adaptor ring, adaptor arbor sealing nut and oil lock snap ring.
Uses stock RC3 fork rebound adjuster cap*

Self install kit includes custom valving for each rider, and midValves set to rider anti-dive preference.


• 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
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 recomendations 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 $100 including Spectro 85/150 oil.

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

*RC3 fork cap still provides air pressure assistance for heavier riders.

• 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


Internal view of Marzocchi 55 replacement cartridge


Stock RC3 (any model year from 2009-2013) fork cap provides rebound adjustment, your fork cap internals must look like this for the cartridge to fit.


Requires us to bore out your damper fork cap to install our rebound cap internals*
This method is not available for self-install.

Click here for compatability chart and for models requiring the purchase of an RC3 rebound fork cap:

Stock rebound piston, note: no shims, no midvalves and plastic check valve for RC3 and Micro Air, for more details of the stock internals click here:

2011-12 Micro Ti Air

2012-2013 RC3 EVO Ti

Our cartridge rebound piston, midvalve and rebound valving shims



Marzocchi 55


35 mm Marzocchi 55 RC3 EVO / RC3 Cartridge Kit including Adaptor
and Midvalves installed, $449


Fits all other 55 models with the purchase of a RC3 rebound fork cap.
Currently not available from Marzocchi.

For details on Cartridge click here:

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

Directly fits fits: 2012-13 RC3 EVO Ti 170 mm
2011 RC3 Ti 160 mm
2010 RC3 Titanium 160 mm
2009 RC3 160 mm

No longer Available for all models of Marzocchi 55
with the purchase of a RC3 Rebound Fork cap
Currently not available from Marzocchi.


Requires us to bore out your damper fork cap to install our rebound cap internals*
This method is not available for self-install.

Dowload the Installation and set-up manual here:

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.


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 model that the cartridge will be installed in.

Fork Model

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


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

Rider Ability


Marzocchi 55


Have us install your cartridge for you

Ship us your fork, we will install your new cartridge
includes Spectro 85/150 Oil

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. This is not a rebuild, it assumes your fork is in good working condition with no leaks or scratches on the stanchions.

Price $100



Price $100, plus shipping difference





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