Electric trekking bike Trek Charter+ 4 R9 540 Wh Lowstep black: step-through, Bosch 540 Wh, 30.80 kg in M

Trek Charter+ 4 R9 Lowstep Dark Web: back in the saddle with confidence

With its very low step-through frame, the Trek Charter+ 4 R9 540 Wh Lowstep is as easy to get on as sitting down, with no need to swing your leg over a tube. It carries a Bosch Performance Line motor, a 540 Wh battery and a 9-speed Shimano CUES drivetrain, for 30.80 kg in size M according to Trek. The assistance supports your effort up to 25 km/h. Dark Web is a deep black, discreet and stylish.

Technical specifications

Who is it for?

For riders returning to cycling after years off the bike, or whose hip mobility makes it hard to step over a conventional frame. It also reassures people who stop often and want to put both feet down quickly.

The LVR workshop view

A step-through frame designed for frequent stops. The Charter+ 4 R9 Lowstep is built on Alpha Platinum aluminium, one of the higher grades of Trek's alloys. Its low step-over lets you put a foot down at every red light without contortions, and Trek has integrated the rack and mudguards into the frame, avoiding add-on mounts that work loose over time. The 540 Wh battery slides in through the top of the down tube.

In short: this is the entry point to the step-through Charter+, with a 9-speed Shimano CUES derailleur and a 75 Nm Bosch motor. At 30.80 kg in size M according to Trek, it's aimed at everyday journeys and half-day rides.

The cockpit is adjustable: the Bontrager height-adjustable stem lets you raise the 630 mm bar for an upright upper body, or lower it for a more active position. This adjustment takes the strain off your wrists and back, and we do it with you in the shop rather than leaving you to guess.

The Bosch Performance Line motor delivers 75 Nm: enough to climb the street up to Saint-Nazaire cathedral without getting out of the saddle. The Shimano MT200 hydraulic brakes and their 180 mm rotors need little force at the lever, a real plus for less strong hands.

Which Charter+ should you choose?

Our take: the R9 540 Wh Lowstep shares its frame and equipment with the Trail 540 Wh Lowstep, but keeps a 630 mm bar and a 63 mm fork better suited to the road. If hills worry you, the Charter+ 5 R10 540 Wh moves up to 90 Nm for 30.30 kg in M.

Your questions

Why buy from LVR Cycles? Our Béziers workshop adjusts the bar and saddle height to your build, shows you how to use the kickstand and the Bosch modes, and looks after the motor at every service.

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.