The Öhlins SJ FSR Shock Absorber for 650b/29 provides the ultimate in low hysteresis damping performance for enduro riding & racing, whether it's in straight line or side load scenario The Shock Absorber also features a three-way external adjust for high- and low-speed compression, as well as rebound, for total fine-tuning capability. The adjustment ranges are intuitive, as well, with external adjustments for high-speed compression, low-speed compression, and rebound damping. Spring rates are also highly adjustable for all weights, effectively rounding out the shock as the complete enduro package.