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Seat Post Parts

Specialized Rear Rack Seat Collar
$15.00
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.
Specialized Rear Rack Seat Collar 29.8mm
$25.00
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.
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