Sprindex Adjustable Rate Coil Spring, 55x126mm - 550-610lbs Wrenches-Flat Manufacturer Part Number: SA35SS40

Manufacturer Part Number: SA35SS40

RS4021 FK3982

- Synthetic top with Kevlar sides

Manufacturer Part Number: 688 LLU MAX

- 35mm stack height

Sprindex Adjustable Rate Coil Spring, 55x126mm - 550-610lbs Wrenches-Flat Manufacturer Part Number: SA35SS40Adjustable 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