Tadej Pogaar will race a new prototype Colnago time trial bike at the prologue of the Tour de Romandie today, called the TT2. The Italian brand says the TT2 is an evolution of the TT1 time trial bike, which Pogaar has used in support of all four of his Tour de France wins to date, with development centred primarily on weight reduction. Colnago claims the TT2s frameset (frame, fork and dedicated seatpost) is 550g lighter than the TT1s in a size small, which it says mirrors a wider shift in aero bike design. Colnago says time trial courses have become increasingly punchy and technical in recent years, with weight a more important factor than it has been traditionally. The Y1Rs was the bike of choice when Pogaar won the stage 12 time trial to Peyragudes in 2025. Tim de Waele/Getty Images Indeed, while an extreme example, Pogaar rode a stripped-down Y1Rs aero bike for the Tour de Frances mountain time trial this contrasted with the approach of his rivals, Jonas Vingegaard and Remco Evenepoel, who rode their respective TT bikes. The latest developments to Colnagos time-trial platform suggest that, although Pogaar won that race, the TT1 was deemed too overweight to ride on the day. The TT2 features softer trailing lines, plus smoothing of the rearside of the head tube. Alongside this, Colnago says it has modified the aerodynamics, delivering a claimed two-watt improvement at 50km/h, based on a weighted average across the typical yaw angles cyclists tend to encounter. Colnago also claims the TT2 reduces the destabilising effect of crosswinds, improving handling by limiting the need for rider corrections factors it claims can translate to higher average speeds. The seatstays have been redesigned, and there's larger clearance for the tyres. Visually, the frameset sports softer trailing edges at the head tube, a wider-arcing fork crown and a modified seatpost, while more space is left between the rear tyre and seat tube. The new bike has also reverted to a more traditional seatstay arrangement, dropping the TT1s horizontal bar layout that intersected with the bottle cage. Colnago has confirmed to BikeRadar that the new bike can sport 30mm tyres with the requisite 4mm clearance, as required by ISO standard (up from the TT1s 28mm), and can sport up to a 70-tooth chainring in a 1x setup. The fork crown has also been modified. For reference, the largest chainring sizes weve spotted on the WorldTour to date include those used by Ineos-Grenadiers Josh Tarling and Filippo Ganna (among a few others), typically topping out at 68 teeth. Pogaar will ride a size small (S) at the Tour de Romandie, but Colnago says sizes XS, M and L will also be available. The smallest size is said to broaden the fit range, while the M and L frames feature taller stacks to ease position setup, according to the brand. Colnago has retained the same TT basebar arrangement as before, while Pogaar uses ENVE-branded extensions. Colnago Availability to customers is expected from September 2026, with pricing still to be confirmed.