Suspension – Slamtail

Have a Softtail Harley and want to stand out from the crowd? Check out Slamtail.

• Slamtail is a fully designed and engineered system using an on-board Electro-Hydraulic Power Unit that lengthens and shortens two hydraulic rams attached to your Harley spring/shock assemblies.
• The power unit can generate over 1000psi fluid pressure, when transferred to the rams, gives them a retracting force of over one ton per ram.
• The fluid is passed through high quality aerospace spec stainless-steel braided PTFE hydraulic hoses which are swaged at both ends (not crimped), and pressure tested to over 4000PSI.
• The Hydraulic Power Unit is installed under the engine/transmission in a little pocket all Twin-Cam Softails have.

• Attached neatly to the motor body is a specially designed extruded aluminum housing that contains all the electronics which control the electric motor via remote control.
• The whole assembly is protected from the weather and road grime by a 16-gauge thick pressed steel plate, that is powder-coated over zinc-plate, attaching to the underside brackets at 4 points.
• The 2 hydraulic actuator rams that screw onto the OEM Harley spring shock units are precision manufactured from aerospace grade steel and aluminum alloys.
• Each actuator assembly has a full travel of 7/8″ which when translated through the suspension motion ratio of 3:1, gives you a total change in ride at the wheel of over 2½
• When the actuator reaches the top of its stroke, an internal pressure relief valve kicks in, now release the UP button.
• When the actuator reaches the bottom of its stroke, an internal relief valve kicks in, now release the DOWN button.

Systems like this aren’t cheap but they do improve the overall suspension and ride. The lowering at rest is a bit “clingy” for my tastes but hydraulic suspension is some of the smoothest and most controlled you can put on any vehicle. The nice thing with a motorcycle setup is the lack of complication compared to a car. It’s a very good application and if you need tons of adjustable comfort this may be the setup for you.