48 Station Road, Letchworth, Hertfordshire SG6 3BE
01462 683615

PowerAssist Commuter


These bikes are built with bigger batteries, faster motors and ride-ready features like fenders, racks and lights so you can tackle longer commutes and even replace your car!


The UM4+ is a rugged utility electric bike built with simple, long-life performance parts that make it easy to make this bike a part of your everyday routing. Internal 7-speed gearing, a low-maintenance Gates belt drive system, a powerful Bosch motor for speeds up to 25 km/h, a rear rack battery and hydraulic disc brakes give it the capability to take on daily commutes, shopping runs and more!

Sizes Available:
The UM4+ is available in L
Colours Available:
Recommended Retail Price:
For more information

Other bikes in the

Trek Power Assist Commuter Bike

range include...

Townie Path Go! 10D Step-Thru


Loft Go! 5i Step-Thru

To find out more about the complete
Trek Power Assist Commuter Bike
range and to discover their differences, please contact Trisports

The Trek Guarantee...

Each Trek carries a simple promise: We’ll take care of you and do what’s right. A lot has changed since the first frame came off the line, but not the pride we take in our work. Which is why we build products to last a lifetime. Because not having an issue is the best customer service we could ever offer.

To qualify for Trek Care you must register your bike. Registration is quick and easy.

Register your bike

Trek's heritage...

The four decades following Trek's inception have witnessed greater innovation than the previous four hundred. Bicycles have not been immune to this explosion in technological advancement. Trek have been at the forefront of the movement, continually challenging the limits of the bicycle's capability.

The world needs the bicycle more today than ever before. And Trek is building a better world through this simple, elegant machine.

Why choose Trisports?

We ensure you get the most from your cycling, with a superb range of equipment & accessories that meet all your needs, all presented with Trisports expert advice, getting it right first time, saving you time.

In our workshop, Joe, Paul and Adam have a vast range of experience between them and are industry trained to undertake a wide range of repairs, builds and servicing on any brand of bicycle.

Choose Trisports for your next Trek.

See the full range of Trek bikes in store. We'll take the time to ensure you get the bike that's right for you and for your budget.
How to find us

Trisports offer financial assistance to help purchase your dream bike