Progressive-Rate VALT springs maintain the sensitivity and “set it and forget it†mentality of a traditional coil set up, but with the progressiveness and ramp up that hard-charging riders and many frame designs demand. Progression begins at 50% into the stroke of the spring. Inner diameter: 36.5mm Outer diameter: 52.5-54mm Can be used with Fox use by using the Cane Creek to Fox spring adaptor 
