Cane Creek VALT Progressive Spring Linear and Progressive Rate If you're using a coil rear shock, the performance of your shock is directly related to the quality of your spring. The Cane Creek VALT Progressive Spring is designed and tuned by Cane Creek's engineering team to provide riders with a true rise-in-rate spring curve. The Progressive-Rate VALT springs maintain the sensitivity and "set it and forget it" mentality of a traditional coil setup, 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. Features Progression begins at 50% into the stroke of the spring Significant weight reduction over standard steel springs Provides riders with a true rise-in-rate spring curve Not sure what spring rate you need? Check out: Everything You Need To Know About Coil Springs | Cane Creek | Valt Progressive Spring 45Mm 400 488Lb