EXT Ferro Fork + Arma Shock E-Moto Suspension Set
- Lead Time: Ships in 10 days
The EXT Ferro Fork and Arma Shock are among the most premium suspension upgrades for lightweight electric dirt bikes including Surron, Talaria, E Ride Pro, and more. Known for their reliability, performance, and customization, upgrade your ride confidently with the industry-leading e-moto suspension package.
EXT E-Moto Suspension Compatibility
- Surron Light Bee X/S
- Segway X160/X260
- Talaria Sting MX3/MX4/MX5
- Talaria X3
- E Ride Pro S / SS 2.0 / SS 3.0 / SR
- Ventus One
- 79Bike Falcon
- Altis Sigma
See EXT Ferro Fork compatibility chart below.
EXT Ferro E-MX Fork Features
- Dual drop crown inverted MX design (USD)
- 36mm hard-chromed steel stanchions (heat-treated 42CrMo4) with Superfinish surface treatment
- HS3 3-twin positive air system + 1 large negative self-balancing air chamber = optimum support for all travel
- High-flow, 3-way adjustable cartridge damper system with independent high/low speed compression + rebound damping adjustment
- Superfinish inner tube coating
- 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 + low hysteresis
- Self-hydraulic cartridge bleeding
- Dedicated Mobile Sliding DU guiding system with super-long static overlap for maximum guidance and best torsional rigidity
- Continuously Guided Bushing (CGB) system increases dynamic stiffness
- 205 mm of travel and 44 mm offset
- 200 mm post mount brake
- Weight: 4000gr
- Pressure release one-way valves on both legs
- Compatible with stock fender design
- Choose Warp 9 Boost Hub Spacer for more flexibility with aftermarket wheel sets
Note: 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 the Warp 9 Boost Hub Spacer (add-on option available).
Note: For older Surron Light Bee models, a head tube reinforcement clamp is recommended.
EXT Ferro Fork Compatibility |
|||
|---|---|---|---|
| Make | Model | Direct Fit? | Notes |
| Surron | LBX | Yes w/ Boost Rotor Spacer | All model years compatible |
| Talaria | MX3 / MX4 | Yes w/ Boost Rotor Spacer | Recommended: Drop Crown for MX / Flat for X3 |
| X3 | |||
| MX5 | No | MX5 version available soon | |
| E Ride Pro | S / SS 2.0 | Yes w/ Boost Rotor Spacer | N/A |
| 3.0 / SR | Yes w/ EXT Brake Adapter | Fits SR model, but will not be covered by warranty. | |
| Ventus One/One+ | N/A | Yes w/ Boost Rotor Spacer | N/A |
| 79Bike | N/A | Yes w/ Boost Rotor Spacer | N/A |
| Rawrr | Mantis / X | Yes w/ Boost Rotor Spacer | N/A |
| Zero | XB | Yes w/ Boost Rotor Spacer | N/A |
| ReRode | R1 / EWatt 2.0 | Yes w/ Boost Rotor Spacer | N/A |
| Altis Sigma | N/A | Yes w/ Boost Rotor Spacer | N/A |
EXT Arma E-MX Shock Features
- Fully-Customizable Hydraulic Setup: specific for each rider / bike
- Lightweight Spring Options: 400/450/500/550/600 lbs (lower weight available upon request)
- Full Length and Travel: 10.5" x 3.5" shock - don't use with 1.5″ riser linkage
- 4-way Adjustable Hydraulic Bottom-Out Control: LSC-HSC-LSR-HBC
- Easy Installation: direct, bolt-in, no additional hardware needed
- Dedicated Eyelet Design: spherical bearing on both ends
- Main Piston: high-flow 29mm / Valve Piston: 24mm
- Shaft: 14mm - 50% larger than most coils for handling large side-loading events
- Rebound Circuit: engineered to separate bump and rebound oil flow (ultra-low friction coating)
- Very Low Reservoir Pressure: maximum sensitivity and low cavitation (55 PSI)
- Very Low Hysteresis: high dynamic response
- High Turbulent Flow for progressive dampening + mid stroke support
- Low-Friction Seal
- Thin Bottom-Out Bumper
- Washer for clearing debris
- Low-Profile Rebound Knob for easy spring swap
- Includes (1) lightweight spring available in 400, 450, 500, 550, or 600 lbs
- Includes mounting hardware for easy bolt-in installation
| Arma Spring Size Guide | |
|---|---|
| Rider Weight | Spring Size |
| Up to 140 lbs | 400 |
| 140-180 lbs | 450 |
| 180-210 lbs | 500 |
| 210-240 lbs | 550 |
| 240+ lbs | 600 |
Note: This chart is a general guide for choosing your spring size. For firmer or softer preference, select a spring weight size above or below. For the maximum weight limit, please refer to the Sur-Ron, Segway, or Talaria manufacturers guidance.

