Bontrager's top end post now comes with a carbon fibre head to match the shaft and weighs a paltry 157g (330mm model). The alloy clamp gives you infinite adjustment to the angle of your seat with just one bolt, and there’s no movement in that angle as you tighten, so getting things set up is easy.
The only problem we had was with unusually close saddle rails making fine-tuning tougher than usual, but it just demands a little patience.
Bontrager says the Race XXX Lite is for road riding only but it doesn’t give a rider weight limit. Our 80kg test pilot had no worries though, with thicker post walls at the front and rear compared to the sides helping to keep flex within normal limits.
You can choose between 250, 330 and 400mm lengths with either 5mm or 20mm of layback (the distance between the centre line and the middle of the clamp), but it’s currently only available in a 27.2mm diameter.