The REA MX is a direct bolt-on replacement for the Sur Ron Ultra Bee. No additional hardware is needed, simply bolt-on and go. Shock will be pre tuned by EXT-USA on the information you provide. 

The REA MX includes the following features

• Robust 40mm Damper Body and 16mm Shaft
• 4-way adjustable: LSC-HSC-LSR-HBC (Hydraulic Bottom-Out Control) With wide range of adjustability to tune for all riding types.
• High flow main piston
• Engineered rebound circuit to separate bump and rebound oil flow – Ultra low-friction coating.
• User adjustable HBC technology that allows for use of softer main spring rate and provides progressive damping support through the last 15% of stroke.
• Very low reservoir pressure for maximum sensitivity and low cavitation
• Very low hysteresis for high dynamic response
• High turbulent flow for progressive dampening and mid stroke support
• Low friction seal
• Secondary bottom out bumper to support end strake events in addition to HBC technology.
• Low profile rebound knob for easy spring swap.
• Included with 1 EXT superlight V2 Spring in weights spring available of 450lb, 500lb, 550lb or 600lbs.
• Comes with specific motorsport spherical bearing mounting hardware for easy bolt in installation.