Sprindex Adjustable Rate Coil Spring, 55x126mm - 610-690lbs Bar Ends Manufacturer Part Number: STM109-BKAG

Manufacturer Part Number: STM109-BKAG

Manufacturer Part Number: RF732-GKS-B

UPC: 884603542552

Available in 21oz/600cc and 24oz/700cc capacities

Manufacturer Part Number: 55054007001

Sprindex Adjustable Rate Coil Spring, 55x126mm - 610-690lbs Bar Ends Manufacturer Part Number: STM109-BKAGAdjustable base spring rate by changing the length of effective coils Includes spring, adjuster, and 5 Delrin performance adapters that allow the spring to spin while compressing and also adapt to a variety of shocks on the market Coil is made of super high tensile spring steel similar to "lightweight" springs (which is why Sprindex is lighter than regular springs) in order to handle the stress of the system when adjusted to its highest spring rate