eUltra WPNT
Love riding off-road but live in an urban jungle? The Ultra is your perfect companion.
eUltra WPNT
Switch seamlessly between gravel and road—and in its electric version, extend your range even further.
We built the e-Ultra starting from the award-winning carbon frame of the non-electric Ultra, capable of running 650b tires up to 61mm wide.
Its aerodynamic package is designed to maintain high speeds on both pavement and dirt. Prefer less extreme terrain or pure road? The e-Ultra also fits 700c tires up to 45mm WAM (Width-As-Measured).
CHOOSE YOUR BUILD
THE HIDDEN BOOST
Anyone who has ridden the Ultra agrees: it’s light, responsive, and fun. Review after review, award after award, its authentic character has been revealed.
So when it came time to create an electric version, we didn’t change a thing.
All electronics, cables, and batteries are housed inside the downtube—no bulky profiles or unsightly external modifications. The Mahle X20 rear hub motor is the secret behind its perfect weight balance and unmatched ride feel, adding less than 4kg compared to the non-electric model.
WHAT’S ESSENTIAL IS INVISIBLE
Just look at it: the e-Ultra shares the same geometry, design, and aerodynamic tube shapes as the original Ultra.
Every 3T e-bike offers the same aesthetics and ride sensation as its non-electric counterpart.
The award-winning carbon frame remains untouched, while the Mahle X20 motor—simple and discreet—preserves geometry and usability, letting you focus on the pure joy of riding.
GO FURTHER
We love riding the Ultra into the unknown. Every climb conquered, every pass reached, is a reward for our effort. Sometimes you want to push beyond—ride farther, keep up with stronger friends—but hesitate to try.
An electric motor that delivers smooth, natural power without compromising the essence of pedaling can elevate your cycling experience to the next level.
The e-Ultra offers the freedom every 3T bike represents—with an extra boost when you need it.
POWER, EFFICIENCY & LIGHTNESS
The e-Ultra is equipped with the Mahle X20 motor customized for 3T, delivering 65Nm torque, paired with a 350Wh battery for long-lasting, progressive power—all with minimal weight gain.
The Mahle system offers Bluetooth & ANT+ connectivity, Garmin compatibility, three preset power modes, and a fully customizable fourth mode via the MySmartBike app.
With smart power management, you can easily achieve 130+ km range and 2000 m elevation gain*.
Need more autonomy? Add the optional 173Wh range extender (1.1 kg) mounted in the bottle cage for +40 km and +600 m elevation gain.
*Average for a rider under 75 kg on fast gravel/asphalt routes, EU speed limit of 25 km/h.
IT ALL STARTS WITH THE TIRES
To build the fastest gravel bike possible, start with the tire. Tire choice determines comfort, grip, and how airflow interacts with the frame.
To design aerodynamics around tires, you need their real measurements—not what’s printed on the label. That’s REALFAST aerodynamics.
We measured hundreds of tires to know their true WAM (Width-As-Measured) and RAM (Radius-As-Measured) and used this data to shape the frame.
REALFAST AERODYNAMICS
The Ultra was one of our toughest aerodynamic challenges: start with massive 55–61mm 650b tires and make the bike fast.
We can’t change the tires—they’re big, and knobs don’t help. But we can manage airflow. That’s why the 60mm-wide downtube hides behind the front wheel and grows wider toward the bottom bracket.
Combined with an offset aero head tube and other design tricks, you get a bike that feels way faster than your brain expects.
Because let’s be honest: when you see those tires, you expect sluggish MTB performance. But thanks to optimized geometry, aero shaping, BB stiffness, and a narrow Q-factor, the Ultra rides like a road bike when you want speed—even when it’s muddy.
GEOMETRIES
| Size | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|
| 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 |
| 01. Stack | 520 | 542 | 564 | 584 | 604 | 632 |
| 02. Reach | 351 | 362 | 373 | 381 | 388 | 399 |
| 03. Headtube angle | 68.5 | 69.5 | 71.0 | 72.0 | 72.5 | 72.5 |
| 04. Fork axle-crown | 375 | 375 | 375 | 375 | 375 | 375 |
| 05. "Road" Headtube | 122 | 142 | 158 | 175 | 196 | 225 |
| 06. BB drop | 79 | 79 | 77 | 77 | 75 | 75 |
| 07. Seattube angle | 74 | 74 | 74 | 74 | 74 | 74 |
| 08. Seattube length | 436 | 463 | 490 | 518 | 549 | 576 |
| 09. Toptube length | 510 | 527 | 545 | 559 | 574 | 593 |
| 10. Front center | 597 | 606 | 602 | 607 | 616 | 636 |
| 11. Rear center | 419 | 419 | 419 | 419 | 419 | 419 |
| 12. WHEELBASE | 1003 | 1013 | 1009 | 1014 | 1024 | 1044 |
** Ultra FORK length is equal to a standard road bike, so this HEADTUBE length can be compared to road bikes. To compare to gravel bikes with standard gravel forks, deduct 25mm from these “road" headtube lengths for a proper comparison.
design in details
75MM DOWNTUBE BASE
Lower downtube aero profile is 75mm wide to fully shield water bottle.
60MM DOWNTUBE NECK
Upper downtube necks down to 60mm to pick up the airflow coming off the front tire.
SIZE-SPECIFIC DOWNTUBE
Reduced depth on smaller sizes to keep frame compliant and keep space for bottles.
PERFECT AERO CUTOUT
Close-fitting cutout to shield the rear wheel and achieve the most speed.
MIND THE GAP
No oversized gaps between front tire & downtube for better airflow transition and less turbulence.
HUGE CLEARANCE
The original Exploro set today’s standard for up to 54mm tire clearance. The Ultra has up to 61mm!
MINIMALIST CROWN
Fork crown shapes haven’t changed much since brakes were attached there. Now that we have disc brakes, we don’t need that bulk of material and can reshape the crown for better strength, stiffness and weight. Plus better aerodynamics.
PURE-ROAD FORK LENGTH
With the shorter crown, we can make our forks 25mm (1 inch) shorter than other gravel bikes. Exactly the same as a road fork. This offers better stiffness, lower weight, an easier steering geometry and better aerodynamics.
DOUBLE-DROP CHAINSTAYS
Dropping the drive-side chainstay improves tire & crank clearance. Dropping the other side as well creates a much more efficient structure behind the BB for higher stiffness & strength as well as lower weight.
DIRECT-MOUNT REAR BRAKE
Standard frames require an adaptor to use a 160mm brake rotor. We have integrated that into the frame, meaning you don’t need any extra pieces to attach the brake.
DIRECT-MOUNT FRONT BRAKE
Standard forks require a flip-flop adaptor to set the correct brake rotor size. Our direct-mount pre-sets the caliper for 160mm rotors without any extra pieces.
SELF-ALIGNING WEDGE CLAMP
Self-adjusting bolt angle for higher clamping forces with lower torque.
AERO SEATTUBE+ROUND SEATPOST
The seattube is kept aero yet it fits a round 27.2mm seatpost so you have many round, dropper or suspension post options.