Purists and old schoolers alike often fall back on aluminum's proven performance in areas of the bike where strength is absolutely critical. 3T's Ionic 0 Pro seatpost is identical to the Team version in every way, except that it features an alloy shaft. Instead of the carbon used in the Team, Ltd, and Stealth versions, the Pro Ionic seatpost utilizes a full aluminum alloy construction. It gains a few grams, 30 to be exact, but maintains the robust feel of carbon. Atop the post, 3T uses it sophisticated Difflock seat clamp. This is a single bolt clamp was built from alloy and it is compatible with saddles that have 7mm round rails. The splined design of the clamp makes setting saddle angle and setback simple and it requires only lightweight clamping to ensure that the saddle is secure.