Fox 40 RC2 Cartridge Adaptor Kit     The best performance modification you will ever do to your fork!. Semi-sealed cartridge and open bath ABS system for better lubrication and to minimize oil volume. Smart Adjust Threshold Compression Damping System ™ Removes harshness out of firmer low speed compression settings. Allows you to add compression for a firmer ride and auto adjusts for higher speed hits. Optional user reconfigurable for progressive, linear and regressive threshold settings. User serviceable, uses auto volume pressure spring system, no bladder or nitrogen charging required. Cartridge ships with the internal damper oil already installed. (Spectro 85/150) External low speed compression and rebound adjusters, Internal revalvable custom high speed compression and rebound valving, threshold reconfigurable. Internal Anti-dive MidValving with extra shim packet for custom tuning. Includes the 20 mm Cartridge Damper Kit Insert, ABS cone/lower casting adaptor, adaptor arbor sealing nut, oil lock adaptor ring and oil lock snap ring. Self install kit includes custom valving, and MidValves. Optional Pressure springs Soft, Hard, and Regressive available Optional Smart Adjust Progressive, Linear, and Regressive systems available. Weight 450 grams (Fox Fit Cart 314 grams) filled with oil. Fits all Fox 40 RC2/RC2 Fit Models. 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. Are you looking form SSD DHX 5.0/4.0/VanRc Conversion, click here:

Images of Cartridge Installed

The Avalanche Advantage over the RC2 and the Fit RC2 cartridge:

Uses a pressure spring system to maintain proper minimum preload charge on the damper oil, this prevents cavitation(vapor bubbles that disrupt the damping feel).

Pressure spring system provides a linear feel to damper rod stroke, as compared to air charged and bladder systems, the rate can be changed up or down with optional pressure springs.

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 (21.2 mm) 4 port compression valve with optional revalving charts and shims available to fine tune your fork for your individual riding conditions and ability.

End of travel position sensitive Anti-Bottoming system uses the outer slider tube and lower casting to take the load of the big hits,

as compared to the Fox dampers, the internal cartridge tube and rod of the damper are not spared from the stress and strain of these loads.

User serviceable, all parts are available here at Avalanche to service or modify the internal set-up. Oil is filled though the top of cartridge and self setting with one compression stroke.

Revalving kits can be purchased from Avalanche or any suspension tuning shop that carries standard 6 mm shims.

The inverted design prevents that blown, no rebound damping feel that you would get from the original RC2 damper when the bladder failed.

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 RC2 large compression adjuster protrusion at the bottom of the fork is eliminated and cleanly redesigned and moved to the top for easy access.

techinfo@avalanchedownhillracing.com