3T Ionic 25 LTD Seatpost

$269.99 $237.99
(You save $32.00)
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3T Ionic 25 LTD Seatpost


Ionic is a new seatpost design featuring the sophisticated and robust, 3T‑exclusive DiffLock seat clamp. Ionic‑0 places the seat clamp assembly in line with the seatpost for 25mm-setback. Many athletes seeking outright speed favor this more forward position on the bike. Some frame designers are also specifying a slacker seat tube so riders can set their bike up with an inline post, which is lighter than a setback post. The splined alloy DiffLock coupling is a highly-accurate method of setting saddle angle needing only lightweight clamping by side-mounted bolts. It is especially useful for fine adjustment of saddle setback, which can be done without impacting saddle angle. Ionic‑25 Ltd is a monocoque in high-modulus carbon-fiber, finished in high-gloss black with the 3T Ltd silver stripe. 


  • Monocoque high modulus carbon-fiber seatpost
  • 180 grams in 31.6mm x 280mm
  • Alloy Difflock seat clamp fits only saddles with 7mm round-section rails
  • Clamp Style: Standard Rails
  • Color: Black
  • Defined Color: Black
  • Diameter: 27.2 mm
  • Length: 350 mm
  • Material: Carbon
  • Max Height: 260 mm
  • Min Height: 165 mm
  • Offset (mm): 25 mm

Note: Standard DiffLock seat clamp fits only saddles with 7-mm ∅ round-section rails. Saddles with oval rails require oval-rail clamp caps.

Buy 3T Seatposts online at TexasCyclesport.com