EXT Ferro E-MX Fork

for Sur-Ron, Talaria, E Ride Pro, Etc

Developed by the team at EXT Racing Shox, the FERRO USD 36 is a premium 205mm travel upside-down fork designed to push the limits of e-moto performance. Built with cutting-edge suspension technology, this fork is a direct result of decades of motorsport innovation—now purpose-built for electric dirt bikes like the Sur-Ron Light Bee, Talaria MX3 / MX4, E-Ride Pro series, and more.

Whether you're racing, freeriding, or bombing rugged backcountry terrain, the FERRO delivers unmatched stiffness, bottom-out control, and tuning flexibility. It’s built to elevate every part of your ride—from control under braking to support during jumps and landings.

NOTICE: If you are running a stock wheel or a wheel that is not specifically designed for use with BOOST hubs you will need to install a rotor adaptor that is available HERE

Dont Forget to get your headset bearings Here.
These do not come with Bearings.

The Ultimate Inverted Fork Upgrade for High-Performance Electric Dirt Bikes

Some bikes such as the Altis Sigma, SRPNT Moto, E-Ride Pro SS 3.0, and E-Ride Pro SR require a brake adapter that is in development. Contact us for support or pre-order solutions.

Core Features

• 205mm of travel with 44mm offset
• 36mm Ø hard-chromed 42CrMo4 steel stanchions with Superfinish treatment
• 7075 aluminum dual-crown construction for maximum stiffness
• Boost hub spacing with 20mm floating axle for aftermarket wheel compatibility
• HS3 hybrid air spring: Dual positive + high-volume negative chamber for mid-stroke support
• High-flow 3-way damper with separate high/low-speed compression and rebound adjustments
• Large piston design with separate IFP + coil-energized HDRV valve
• Low hysteresis and no cavitation cartridge design
• Superfinish-coated inner tubes + aeronautical seals to reduce stiction
• Pressure release valves on both legs for quick air bleeds
• Sliding DU bushing system (CGB – Continuously Guided Bushing) for increased stiffness under side loads
• Post mount 200mm brake interface
• Total weight: 4000g (approx. 8.8 lbs)

Why Choose the FERRO?

When EXT Racing Shox saw the rise of high-torque electric motos, they answered with a fork designed from the ground up to handle the demands of today's fastest, heaviest e-motos. The FERRO uses race-proven tech from World Rally Championship suspension and adapts it into a fork that doesn’t compromise.

The HS3 hybrid spring system gives you unreal support near sag and full control at bottom-out. The high-flow damper cartridge brings razor-sharp response and tuning capabilities typically reserved for top-level motorsports.

Fork Structure & Tech Breakdown

• Dual Crown: CNC-machined 7075 upper crowns for high torsional rigidity
• DU Bushings: Oversized with long overlap for guidance and reduced flex
• Axle: Twin hex floating axle ensures perfect alignment and stiffness
• High Flow Cartridge: Large piston + HDRV valve + IFP system reduces lag, increases precision

Includes in Box

• EXT FERRO USD 36 Fork Assembly
• Boost Rotor Adapter
• Axle + Crowns

Optional Add-Ons

• Warp 9 Rotor Adapter – Required for stock Sur-Ron/Talaria/E-Ride Pro wheels
• Headset Bearings – Not included, required for install
• Head Tube Reinforcement Clamp – Recommended for older Sur-Ron models

Fitment

• Sur-Ron Light Bee X
• Talaria MX3 / MX4
  
• E-Ride Pro 2.0 / SS 3.0 / SR
• SRPNT Moto
• Ventus One
• 79 Bike Falcon
• Any e-moto using a 20mm axle and 110mm BOOST front hub spacing
  
  

  ⚠️ Fitment Notes & Required Adapters

  • If using non-Boost 110mm wheels (like stock Sur-Ron, Talaria, or ERP wheels), you'll need a Warp 9 Rotor Adapter – available here
  • Headset bearings are not included – Add them here
  • Not plug-and-play with large brake calipers like Volar Sport Racing – reach out for a custom adapter
  
  

Note: For full compatibility and rotor alignment, a rotor spacer or adapter may be required if using OEM wheels. We recommend the Warp 9 Rotor Adapter for best results.