TREK PROCALIBER 8 (2018)
Trek’s carbon Procaliber frames have been around for a couple of seasons, using the unique ‘IsoSpeed’ technology the US firm debuted on their endurance-road and cyclocross bikes. Now, the exclusive scissor-pivot design, which allows the seat tube to flex independently of the rest of the frame, has been translated into alloy. In theory, this shock-shrugging benefit should make this the most trail-riding-friendly machine here. But what’s the reality?