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.

• Spring Weight: 550+