3T Ionic 25 Team Comfort seatpost review£108.00

Carbon seatpost with vibration-damping technology

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The Ionic 25 Team Comfort is a variant on 3T’s standard mid-level carbon seatpost that adds a vibration-damping device to the head. This takes the form of a polymer ring encircling the clamp, which effectively isolates it (and the saddle) from the rest of the bike.

A 350mm long, 27.2mm diameter post weighs 268g, which is nothing special at this price.

The Ionic’s most ingenious feature is also its most frustrating one. The Difflock clamp system uses splined cylinders that sit within one another to give a precise, repeatable saddle angle adjustment.

It’s a nice idea, but means even minor adjustments require a full disassembly of the clamp, and if your saddle has oval rails you’ll need to buy alternative clamps because there isn’t room in the standard ones. If you’re a bit of a fiddler, the novelty will quickly wear thin.

The splined difflock clamp adjustment system is a good idea but we found it frustrating in use:
The splined difflock clamp adjustment system is a good idea but we found it frustrating in use:

The splined Difflock clamp adjustment system is a good idea but we found it frustrating in use

We’d never expect a seatpost to transform your ride, but 3T could have done more to impress us. In use, it feels like any other decent carbon post.

It does a competent enough job of soaking up road buzz. It would be stretching things though to describe it as providing anything resembling suspension.

For our money, we’d prefer something a bit lighter or more noticeably compliant.

This article was originally published in Cycling Plus magazine, available on Apple Newsstand and Zinio.

Matthew Allen

Technical Writer, UK
Former bike mechanic, builder of wheels, hub fetishist and lover of shiny things. Also a really, really terrible racer who's been dropped more times than you've shaved your legs.
  • Age: 26
  • Height: 174cm / 5'8"
  • Weight: 55kg / 121lb
  • Waist: 71cm / 28in
  • Chest: 84cm / 33in
  • Discipline: Road, with occasional MTB dalliances
  • Preferred Terrain: Long mountain climbs followed by high-speed descents (that he doesn't get to do nearly often enough), plus scaring himself off-road when he outruns his skill set.
  • Current Bikes: Scott Addict R3 2014, Focus Cayo Disc 2015, Niner RLT 9
  • Dream Bike: Something hideously expensive and custom with external cables and a threaded bottom bracket because screw you bike industry.
  • Beer of Choice: Cider, please. Thistly Cross from Scotland
  • Location: Bristol, UK

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