ELEVENSIX coils are precision manufactured at HyperCo&';s state-of-the-art USA facility and available in 25lb/in increments for uncompromising setup. Each HyperCoil suspension spring is individually inspected, and laser marked with size and rate information for the ultimate in accuracy! Fits PUSH ELEVENSIX rear shocks stroke of 47.5-55mm Maximum Shock Stroke = 55mm Inner Diameter = 35.2mm / 1.38" ID also fits on other shocks: Fox coil shocks like the DHX and DHX2 Marzocchi Bomber CR MRP coil shocks About 12% lighter than a traditional steel spring