3T ULTRA BOOST - Carbon Gravel E-Bike - 2026 - black/white

Switch seamlessly between gravel and road — and in its electric version, extend your range even further.

3T 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).

Features of the 3T ULTRA BOOST - Carbon Gravel E-Bike

• Aero carbon frame
• Mahle X20 light assist motor 
• Size-specific top tube
• Special aero profile of the down tube
• Double-drop chainstays
• Flat-mount brakes
• Integrated mudguard mount
• Large tire clearance - up to 61 mm (650b)

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.

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 2000m elevation gain*.
Need more autonomy? Add the optional 173Wh range extender (1.1kg) mounted in the bottle cage for +40km and +600m elevation gain.

*Average for a rider under 75kg on fast gravel/asphalt routes, EU speed limit of 25km/h.