mrp-progressive-rear-shock-coil-spring-133mm-long-65mm-maximum-stroke-550-pound-spring-weight
mrp-progressive-rear-shock-coil-spring-133mm-long-65mm-maximum-stroke-550-pound-spring-weight, Progressive Springs utilize a non-linear design, intended for trail and all-mountain/enduro riding. They are designed to increase in rate, late into stroke, to provide additional bottom-out support and open up the use of coil shocks on frames previously only suited to air shocks.