3T Exploro Ultra

Aero frame..wider tyres..what more do you need?

If you’re like us, you love riding in rough terrain but live in a more urban jungle. So you need a bike that is fast on-road and capable off-road.
The Ultra is our most extreme bike, starting out the design process with 55-61mm wide tires. We then designed the whole aero package around those to keep the on-road speed high. If you ride on less extreme terrain, you can also fit 700c tires up to 45mm WAM (With As Measured) on the Ultra.
If you’re looking for a bike that is even further optimized for speed with narrower tires (35-42mm WAM), then the Exploro RaceMax is your perfect matc

To make the fastest possible gravel bike, you need to start with the tire. Tire choice determines comfort & grip. But it also determines how you can shape the frame to redirect the airflow.
To aerodynamically engineer the frame around the tires, you need to know what their REAL measurements are. Not what’s on the label, but how they really fit. That’s REALFAST aerodynamics. But it’s not easy, as the tire dimension depends on the rim you use, the pressure and of course how accurate the manufacturer’s claimed size is.
So we took hundreds of measurements to know the real tire widths (which we call WAM – Width As Measured and RAM – Radius As Measured) and use that to engineer the frame around.

The Ultra was our most difficult aerodynamic challenge to date. Start with massive 55-61mm tires and then make the bike aero. There’s nothing we can do about the tires, they’re big and the knobs don’t help. What we can do is take the airflow mess that comes off the front wheel and try to catch and redirect it. That’s why you will see the 60mm wide downtube placed closely behind the front wheel, going even wider as it gets closer to the BB.

The RaceMax frameset is is fastest with 35-42mm WAM tires. That’s when its top speed rivals the best road bikes out there. So whether you’re on asphalt, easy or tougher gravel, you can be sure you have the fastest setup. But depending on where you ride and how fast you ride, you may want an even bigger tire for ultimate traction and control. Good news: 90% of the aerodynamic advantage of the RaceMax frameset still works with tires up to 61mm WAM.
In a way, the Ultra is the reverse. It is aerodynamically optimized for 55-61mm WAM tires thanks to its wider downtube near the front tire. This extra width better redirects the air coming off a bigger front tire. If you prefer a smaller tire, you can run a 700c tire up to a 46mm WAM. But as you go to a smaller tire, the Racemax becomes the faster choice again. In addition, the Ultra combines its aero seattube with a round seatpost so you can fit a standard, dropper or suspension post.

Size XXS 51 54 56 58 61
Rider Height* (cm) 145-160 157-171 168-180 176-186 183-195 192&Up
Rider Height* (inches) 4’9”-5’3” 5’2”-5’7” 5’6”-5’11” 5’9”-6’1” 6’0”-6’5” 6’3”&Up
Stack 520 542 564 584 604 632
Reach 351 362 373 381 388 393
Fork axle-crown 370 370 370 370 370 370
“Road” headtube** 125 147 161 180 201 232
Head angle 68.5 69.5 71.0 72.0 72.5 72.5
BB drop 79 79 77 77 75 75
Seat angle 74.5 74,0 73.5 73.0 72.5 72.5
Seattube length 436 463 490 520 549 576
Toptube length 506 526 546 566 586 606
Wheelbase 1003 1008 1012 1014 1024 1044
Front center 597 608 609 611 621 641
Rear center 419 419 419 419 419 419

3T EXPLORO Ultra frameset

Order your 3T Ultra frameset..

3T EXPLORO Ultra Ekar 650b

Massive gear range split into 13 small steps and mechanical shifting for the most reliable go-anywhere bike in our range
Order you 3T Ultra Ekar 650b

3T EXPLORO Ultra Ekar 700c

With 41mm wide tires, this is the raciest Ultra. For the most speed now but with the option to go extreme in any time
Order your 3T Ultra Ekar 700c

3T EXPLORO Ultra Force AXS

Road bike speed & levers, with SRAM Eagle MTB electronic derailleur, and range for a smooth ride in bumpy conditions
Order your 3T Ultra AXS...