Surly Constrictor Seatpost Clamps

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  • Regular price $33.00
  • Tax included.


The Constrictor was designed specifically to end slipping seat posts. The extra-thick clamp utilizes an 8mm stainless bolt and accommodates a rear cantilever brake hanger, if you decide to go that route. The Constrictor is machined out of aluminum billet and black anodized. It's available in 31.8mm, 33mm inner diameter sizes.

Seatpost Clamp Instructions