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UM3+ Stagger

£2,275.00 - £2,625.00 Model 25152

UM3+ Stagger is a do-it-all utility electric bike with robust parts that hold up to everyday use, a powerful Bosch motor for speeds up to 25 km/h, and design features that give this advanced ride a sleek style that can't be matched. The Stagger frame geometry for easy mounting and dismounting, downtube battery, hydraulic disc brakes and a wide-range 9-speed drivetrain make it the perfect choice for everyday commuters who ride on any city road, in any weather.

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It's right for you if...

You're a daily commuter looking for an upgrade in performance. You want a durable electric bike that's as serious as you are about avoiding the morning traffic jam and then grabbing the shopping at the end of the day.

The tech you get

An Alpha Aluminium frame with a Stagger geometry and a lower standover height for easy mounting and dismounting, a powerful Bosch Active Line Plus motor for speeds up to 25 km/h, a Walk Assist feature and your choice of a 300 Wh, 400 Wh or 500 Wh battery. Plus, a wide-range Shimano 9-speed drivetrain with rapid fire shifting, hydraulic disc brakes for all-weather stopping power, puncture-resistant tyres, a rack, mudguards, lights, a U-lock, lock-on grips and an adjustable, Blendr-compatible stem. 

The final word

If you're serious about going everywhere by bike, UM3+ Stagger is fully-equipped to handle your demands. This advanced electric commuter is built with thoughtful features that add to your riding experience, like confidence-inspiring Stagger frame geometry and a downtube-mounted battery for a balanced ride.

The Walkthrough

favorite_borderWhy you'll love it

  1. The Stagger geometry gives you more confidence when mounting and dismounting
  2. If you thought cars were essential, owning this bike will make you reconsider: with UM3+ Men's, going from home to work to the shop is all in a day's ride
  3. Smooth welds add to the aluminium frame's sleek looks
  4. Available with your choice of a 300 Wh, 400 Wh or 500 Wh battery
  5. With a pre-installed rack and mudguards, you can go from the bike shop straight to the shops with ease
  6. The Purion controller has a Walk Assist feature that helps you push your bike out of steep car parks and bike cellars



  • Frameset

    Alpha Aluminium
  • Wheels

    Front hub
    Rear hub
    Alex Rims DP23
    Schwalbe Big Apple K-Guard, 700x50c
  • Drivetrain

    Shimano Acera
    Rear derailleur
    Shimano Alivio 9-speed
    Shimano 9-speed
  • Components

    Bontrager Nebula
    Bontrager aluminium
    Bontrager Satellite Elite Ergonomic, lock-on
    Bontrager adjustable Blendr
    Brake set
    Shimano hydraulic disc brake
  • Accessories

    Bosch Powerpack 300/400/500 Wh
    Bosch Purion
    Bosch Active+, 250 Watt, 50 Nm
    Front light
    AXA Blueline 30
    Rear light
    Spanninga SOLO for e-bike
  • Weight

    M - 23.50 kg / 51.81 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based on Trek pre-production painted frames at the time of publication. Weights may vary in final production

Sizing & fit

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.


Rider Height


All measurements provided in cm unless otherwise stated.

Frame size letter A — Seat tube B — Seat tube angle C — Head tube length D — Head angle E — Effective top tube F — Bottom bracket height G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
L 55.0 70.0° 16.0 68.5° 62.1 30.1 6.2 50.2 4.5 9.5 116.2 62.4 39.7 61.6
M 50.0 70.0° 16.0 68.5° 61.1 30.1 6.2 50.2 4.5 9.5 115.2 62.2 38.7 61.6
S 45.0 71.0° 16.0 68.5° 60.1 30.1 6.2 50.2 4.5 9.5 114.2 62.1 37.7 61.6

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