EXT Suspension Bundle | Ferro Arma MX Fork + Shock + Headset Bearing Set | by EXT & RFLOXA | for Sur Ron & EMoto

Premium-level performance and fully tunable suspension for aggressive eMoto riding — now bundled with RFLOXA headset bearing kit for a complete front-end upgrade.

What's Included

• Ferro MX Fork — View Fork
• Arma MX Rear Shock — View Shock
• RFLOXA Headset Bearing Set — Included in Bundle

ARMA MX Rear Shock — Core Features

• 4-Way Adjustable: LSC, HSC, LSR, HBC (Hydraulic Bottom-Out Control)
• High flow 29mm main piston with 24mm valve piston
• 14mm shaft — 50% larger than typical coils for better handling under side loads
• Separate bump/rebound oil flow for low friction and precise rebound
• Custom hydraulic tuning per bike/rider
• Ultra-sensitive damping via low pressure reservoir (55 PSI)
• Low hysteresis and high dynamic response
• HBC user-adjustable tech for enhanced bottom-out control
• Thin bottom-out bumper with debris clearing washer
• New low-profile rebound knob — makes spring swaps easier
• Includes lightweight spring: 400lb, 450lb, 500lb, 550lb, or 600lb (lower on request)
• Comes with Sur Ron-specific mounting hardware — bolt-on ready

FERRO MX Fork — Core Features

• Dual crown USD MX design — inverted for stiffness and control
• 36mm hard chromed steel stanchions (42CrMo4, heat-treated + Superfinish)
• HS3 triple air spring system + large self-balancing negative chamber
• 3-way damping: high/low-speed compression + rebound adjust
• Superfinish inner tubes with low-friction aeronautical seals
• 20mm boost-compatible floating axle
• Air spring & cartridge with radial guidance and IFP/coil energized valve
• No cavitation / low hysteresis / self-bleeding hydraulic cartridge
• Mobile Sliding DU guide system (CGB) for maximum torsional stiffness
• 205mm travel with 44mm offset
• 200mm post mount brake compatibility
• Weight: 4000g
• One-way pressure release valves on both legs
• Compatible with OEM fenders
• Boost hub spacing — check rotor compatibility

Compatibility Notes

• Rotor Adaptor Required: If running a stock or non-boost wheel, use the included rotor adapter.
• Head Tube Reinforcement Clamp: Required for older model Sur Rons. Current models include this part. Available upon request.