The 3T Zero25 Pro Alloy Seatpost is a lightweight, universal seatpost with a twist: it’s two seatposts in one.

No more problems with getting the wrong seatpost or needing another one when you change the type of saddle you use – it now takes 30 seconds to transform your seatpost.


The two clever, reversible saddle rail clamps transform the post from zero saddle setback to 25 mm setback. All that’s needed is to flip the clamps from one side of the seatpost head to the other and the offset changes.

Zero25 is even lighter than our previous seatpost.

Zero25 can handle any type of seatpost rails, from round to all oval shaped carbon rails.

Zero25 Pro has an alloy pillar and comes in two diameters, 27.2 mm and 31.6 mm, and one length, 350 mm.


Shaft Material: Al-Alloy 7075

Head Material: Al-Alloy

Finish: Shot Peened Black Anodized

Set back: 0/25 mm

Bolts: Stainless steel zinc. black

Weight: 223g (ø27.2 mm x 350 mm)

Length: 350 mm

Diameter: 27.2 mm/ 31.6 mm

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