???????? ??????? ????? Rockshox crown/steerer/upper unit (CSU) SID SA 27.5" AL

RockShox SID/Reba heavy duty and durable replacement CSU assembly. Made of aluminium. Spring type: SoloAir. Tapered steerer. Wheel size: 29-inch. 46 mm Offset. Comes with black upper tube. To fit Sid/Reba Soloair A2-A3 MTB Forks. Comes with white crown and black upper tube. Solo Air is like a Buddhist monk. Its enlightened design lets you add air to your forks through a single Schrader valve, filling both the positive and negative air spring chambers simultaneously. So they are always in perfect equilibrium, like Yin and Yang. Giving you a plush, predictable ride you can set up in seconds, with the lightest weight air spring.