Bitubo Dark Edition Rear Shock - Softail FXLRS/STUpgrade the rear suspension of your Harley Davidson Low Rider ST with the Bitubo Rear Shock with Spring. Designed as a performance focused mono shock, this unit delivers improved riding precision, better rear end control, and consistent damping performance for aggressive street riding and touring use. The shock features a nitrogen pressurized design with a separate compensation tank, helping maintain stable performance under repeated load and