Tadej Pogačar just won stage four of the Tour de France on this Colnago Y1Rs (with a curious spec change)

Tadej Pogačar just won his first stage of the 2025 Tour de France – and claimed his 100th career win – on a custom-painted, world champion-themed Colnago Y1Rs.

Pogačar, the defending Tour champion and now an 18-time stage winner through his career, produced a stunning performance to outsprint Mathieu van der Poel, wearing the yellow jersey, and Jonas Vingegaard in Rouen.

An elite group contested the finish after the race blew up on a finale littered with short, sharp climbs.

It was a tense run to the finish line in Rouen, with a number of different teams trying to control the race. Pogačar was using his UAE Team Emirates team-mates to lead the peloton before Visma Lease a Bike took control in the final 10km to set up Vingegaard. 

Despite Pogačar and Vingegaard breaking away on the final climb of the stage – and Pogačar briefly going solo – a group of select riders came back, including stage favourite van der Poel. 

However, Pogačar managed to outsprint the Dutchman to take his first stage win of the 2025 Tour de France and strike an early psychological blow to Vingegaard, his chief rival for the yellow jersey in Paris.

We got hands-on with Pogačar’s Tour bikes ahead of the Grand Départ in Lille, so let's take a closer look at his Colnago Y1Rs – and see how much it weighs. Head to our gallery on Pogačar’s Colnago V5Rs for more on that.

An aero bike in the world champion’s colours

Pogačar has Colnago’s V5Rs all-rounder and Y1Rs aero bike at his disposal for the Tour de France, and opted for the latter for the 174.2km fourth stage.

He also used the Y1Rs on stages one, two and three, with the V5Rs remaining in the mechanics' truck.

Both bikes are new in Colnago’s range, with the Y1Rs launching in December 2024, and the V5Rs following in April.

The Y1Rs is one of the most distinctive bikes in the peloton – and not just because Pogačar’s frame is adorned with the colours of the world champion’s rainbow jersey.

The frame features tube shapes that make use of the UCI’s latest 8:1 depth-to-width ratio and seatpost-placement regulations.

The seatpost and seat tube arrangement is particularly striking. The seatpost is offset rearward from the top tube junction, creating an aesthetic unlike any other bike at the Tour de France.

According to Colnago, the design is said to improve comfort, thereby allowing a rider to stay in an aero position for longer. The Italian brand also claims that angling the tube forward increases its depth, smoothing airflow in an area of significant turbulence, as a result of the rider’s spinning legs.

Bayonet fork and a V-shaped cockpit

Up front, the bike features a bayonet-style fork, where the steerer is recessed inside the head tube, but the front section moves independently of the frame’s head tube.

In theory, this allows greater control of airflow by effectively extending the head tube forward, without compromising the handling.

The V-shape cockpit is also distinctive compared to a regular one-piece handlebar, even if it is notably similar to the arrangement on Vingegaard’s brand-new Cervélo S5.

The Y1Rs’ 'gull-wing' cockpit features a significant rise and flare to the tops.

Pogačar’s bike carries a personal touch, thanks to the mini-Hulk sticker on the 3D-printed Wahoo bike computer mount, which doubles as an aerodynamic shroud.

A change of wheels and tyres

When we saw Pogačar’s Y1Rs ahead of the Tour de France, it was set up with ENVE SES 4.5 wheels and the new Continental Archetype tyres, which were apparently developed with input from the Slovenian world champion.

However, the bike he rode to victory on today’s stage (and the opening three days of the Tour) was fitted with the new SES 4.5 Pro wheels and Continental’s existing GP5000 TT TR tyres.

For now, it appears that Pogačar prefers the time-trial-like speed of the TT tyres, likely to be in a 28mm size to match the narrower ENVE SES 4.5 Pro rims, over the 30mm Archetype. Curiously, despite that tyre being launched just before the Tour de France, and being developed in a collaboration with Pogačar and his team, it's yet to be seen on a Tour race day.

Will we see the new Archetype raced in anger at the Tour? We're not so sure at this stage.

Familiar upgrades

In terms of the drivetrain, it’s a familiar setup for Pogačar. Like his V5Rs, the Y1Rs is dressed predominantly in a Shimano Dura-Ace Di2 R9200 groupset, but with Carbon-Ti chainrings. An upgrade befitting of a gain-chasing world champion.

The 55/40t chainrings are typically paired with an 11-34t cassette. The direct-mount rear derailleur hanger is a neat touch.

Sprint shifters allow Pogačar to make quick gear changes from the drops, too.

As with his V5Rs, Pog’s aero bike has a 3D-printed saddle from Fizik.

How much does it weigh?

We put Pogačar’s Colnago Y1Rs on the scales at the Grand Départ. The result? 7.57kg.

That’s a 810g ‘penalty’ for riding the Y1Rs, compared to the V5Rs which we weighed at 6.765kg – but that’s clearly not slowing Pogačar down.

Specs | Tadej Pogačar's Colnago Y1Rs for the 2025 Tour de France

• Frameset: Colnago Y1Rs
• Groupset: Shimano Dura-Ace Di2 R9200 with Carbon-Ti chainrings
• Wheelset: ENVE SES 4.5 Pro
• Power meter: Shimano Dura-Ace FC-R9200-P
• Tyres: Continental GP5000 TT TR, 700x28c
• Handlebar: Colnago Y1Rs
• Seatpost: Colnago Y1Rs
• Saddle: Fizik One-to-One, 3D-printed
• Bottle cages: Elite integrated bottle cages for the Colnago Y1Rs
• Pedals: Shimano Dura-Ace
• Weight: 7.570kg