EXT Ferro Fork

FINALLY, A FORK BUILT FOR THE BIKES WE LOVE!

EXT Racing Shox is extremely proud to introduce the brand new FERRO USD 36, an upside-down 36mm stanchions fork which it’s going to complete our E-MX line-up. Hard heat-treated chrome moly steel stanchions (Superfinish surface treatment), 7000 series aluminum construction upper legs and a 205mm travel design with a dedicated triple clamp, make the core of the new 36mm USD fork, developed for minimum friction and high stiffness.

The FERRO USD 36 fork uses the HS3 technology, the unique hybrid air spring system, already been famous with the appreciated mtb fork ERA V2. Two separate positive air chambers work with one, high volume self-equalizing negative air chamber; HS3 is focused on mid-stroke support around the dynamic sag position while offering amazing sensitivity and bottom-out protection.

An high-flow 3-way adjustable hydraulic cartridge is installed inside the fork and with an independent High/Low speed compression and Rebound adjustments set a new standard on the fork adjustability, allowing each rider to properly adjust the damping forces according to his riding style and weight. The possibilities to tailor the fork on your preferences have become unlimited!

The drop crown fits both 19” and 21″ front wheels.

PRE-INSTALLATION SERVICES (see install video below)

Make fork installation simple. Our Fork Install Kit takes care of the hard parts before your fork ever shows up.

When you add this service, your fork arrives ready to install: the steerer tube is cut to direct-mount length, the star nut is already installed (if using a stem lock please note on order), and the lower headset bearing is pressed on, greased, and set correctly. No specialty tools. No shop visits. No runaround.

This saves you from buying expensive one-off tools or trying to convince a local bike shop to handle partial installs (most won’t). With this kit, you can install your fork using basic tools you likely already own.

What you’ll still need:
• A steerer tube spacer set
• Boost Spacer

Bottom line: less hassle, less downtime, and a fork that’s ready to ride the moment it arrives.

If installing on an MX4 or E Ride Pro SS, you will need a 220mm rotor adapter.

EXT Ferro Air Pressure Guide:

Details

• 36mm hard chromed steel stanchions (heat treated 42CrMo4) with Superfinish surface treatment
• Dedicated triple clamp design uppers (7000 aluminum series)
• HS3 system: twin positive air system ¬+ 1 large negative self-balancing air chamber, allows to get an optimum level of support through all the travel
• Chromed steel air spring shaft with Superfinish surface treatment
• High-flow 3-way adjustable cartridge with independent High/Low speed compression and rebound adjustments
• External pressure air release system on both legs
• Twin hexagonal floating axle, boost compatible ∅20mm
• Air spring and cartridge radial guide system with bespoke aeronautical seals (minimize friction on side loads)
• Large piston design for best damping control and separate IFP/coil energized compression valve
• No cavitation and low hysteresis
• Self-hydraulic cartridge bleeding
• Dedicated Mobile Sliding DU guiding system with super-long static overlap (for maximum guidance and best torsional rigidity). (CGB Continuously Guided Bushing system to increase stiffness)
• 205 mm of travel and 44 mm offset
• 200 mm post mount brake
• Pressure release one way valves on both legs
• Weight 4500gr (9.9 lbs)