PUSH Industries SV8 Coil Shock 185x50-55mm Stroke Trunnion B TuneProvides a broad tuning base to accommodate a wide range of frame leverages and configurations Available in standard lengths and strokes and are a great upgrade for riders looking for a performance upgrade over their stock air suspension. Designed and packaged to fit inside most bike frames, and tuned to work with a broad range of leverage rates Can also be used in conjunction with aftermarket springs, aftermarket mounting hardware, and aftermarket