Not just any coil spring... its an Ultra Light Hypercoil Suspension Spring.
To build the world's most advanced MTB shock absorber requires one of the world's premier suspension spring manufacturers. Each spring is precision manufactured at HyperCo's state-of-the-art USA facility and available in 25lb/in increments for uncompromising setup.
Made from premium Ultra High Tensile Suspension Spring Alloy, Optimum Body Diameter (OBD) Hypercoils feature a unique design concept that adjusts the body diameter of the spring relative to the end coils. The OBD design enables Hyperco to take full advantage of its ultra-high tensile material by optimizing the applied stress by adjusting the spring's body diameter. This design resists the bowing of the spring producing greater spring linearity and eliminating spring rub on the shock body.
Each PUSH HyperCoil suspension spring is individually inspected, and laser marked with size and rate information for the ultimate in accuracy!