REAR RACK SEAT COLLAR BLK 31.6MM 31.6mm

Add a rack to your frame, even if you don’t have rack mounts. Allows standard rack stays to be bolted directly to the seat collar, for a clean and simple look. Made from lightweight aluminum for durability, with threaded inserts to bolt the stays directly into the seat clamp.

- 35mm inner diameter fits all alloy Specialized MTB frame designs with 30.9mm posts and 35mm O.D. seat tubes.

- 37mm inner diameter fits all carbon Specialized MTB frame designs with 30.9mm posts and 37mm O.D. seat tubes.