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On-One Twelfty MTB Seatpost On-One Twelfty MTB Seatpost

On-One Twelfty MTB Alloy Seatpost

Premium alloy MTB seatpost for also suitable for hybrid or road use. Featuring a CNC machined head clamp to increase strength and shed weight, the On-One Twelfty has a become a legend on the UK MTB trail scene. Similar to seatposts costing twice as much, the quality of this seatpost belies it's affordable ticket.

Constructed from AL6061 3D forged alloy the On-One Twelfty  is light and strong, with a pro quality two-bolt seatpost clamp system offering strength, reliability and precise adjustability. Two high strength chromoly bolts, running on brass bushings make adjustment a breeze and complete what is undeniably a great seatpost...

Now available in a collection of beautiful high polished anodized finishes!

  • Length 400mm
  • CNC machined head clamp
  • 12mm Layback
  • Weight 262g
  • 27.2mm and 31.6mm diameters
  • Available in polished black, silver, red, white and blue

Additional Information

Product Code:SPOOTW
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From £24.99



Anodised Black / 27.2mm
Lots in stock £24.99
Anodised Black / 31.6mm
21 in stock £24.99