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Deep, plain black, the Trek Inbound+ 2 B 540 Lowstep Dark Star is an understated, long-range electric city bike. Low frame, Gates belt, 45 Nm Bosch rear hub motor and 540 Wh PowerTube battery: everything is designed for simplicity. It weighs 21.40 kg in size M according to Trek.
| Frame | Alpha Smooth aluminium, low step-over Lowstep frame, integrated cables |
| Motor | Bosch integrated into the rear hub, Bosch smart system, 45 Nm, 250 W, assistance up to 25 km/h |
| Battery | Bosch PowerTube 540 Wh, removable and lockable |
| Drivetrain | Gates Sidetrack belt, single speed, 22-tooth rear sprocket |
| Brakes | Shimano hydraulic disc, MT201 levers, UR300 calipers, 180 mm rotors front and rear |
| Wheels / tyres | Bontrager Kovee double-wall Tubeless Ready rims (23 mm), Shimano QC300 front hub / Bontrager E6 Hard-Case Lite 700x50 tyres, reflective sidewalls, aramid bead |
| Cockpit | Alloy lowriser 690 mm handlebar, 25 mm rise, 11° backsweep; Bontrager adjustable-angle stem, Blendr compatible, 70 or 110 mm depending on size |
| Saddle / seatpost | Selle Royal Vivo Moderate Ergo / Bontrager alloy seatpost 31.6 mm, 12 mm offset, 330 mm |
| Equipment | Pletscher Comp Flex 40 kickstand, Bontrager City pedals |
| Weight | 21.40 kg in size M (Trek figure) |
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At a glance
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For the city dweller who wants an elegant, discreet e-bike that's easy to step through, for everyday trips around Béziers and its flat surroundings. It's for anyone who wants to charge less often than with a 360 Wh battery, without giving up the belt.
The belt-drive Lowstep that goes further. This model combines three simple ideas: a Lowstep frame you step through effortlessly, a Gates Sidetrack belt that does away with chain and grease, and a 540 Wh PowerTube battery, 50 % more than on the Inbound+ 2 B LS. The Bosch motor, hidden in the rear hub, leaves the chainset area uncluttered. Alpha Smooth aluminium frame.
| PowerTube 540 Wh (B 540 LS) | PowerTube 360 Wh (B LS) | PowerTube 600 Wh (R10 LS) | |
| Capacity | 540 Wh | 360 Wh | 600 Wh |
| Paired drivetrain | Belt, 1-speed | Belt, 1-speed | CUES, 10-speed |
| Lowstep version | 21.40 kg (M) | 20.50 kg (M) | 22.40 kg (M) |
| What it means | Maintenance-free, less frequent charging | Light, short journeys | For hills and touring |
In short: at 21.40 kg in M, the Inbound+ 2 B 540 LS adds 180 Wh to the belt-drive Lowstep for 900 g more. It stays lighter than the R10 LS, but keeps a single speed: it's made for flat or gently rolling routes.
In town, simplicity is a virtue: no gears to change at the lights, no chain coming off, no grease. The Gates belt and the Bosch hub motor offer a smooth, quiet ride, with assistance cutting out at 25 km/h. The low frame makes frequent stops easy.
The 540 Wh PowerTube battery locks into the frame with a key and comes out for charging at home. The Shimano hydraulic brakes on 180 mm rotors provide powerful, progressive braking in traffic. Get a D-lock and insurance, both essential for an urban e-bike.
| Model | Motor / battery | Drivetrain | Frame | Weight (size) |
| Inbound+ 2 B LS | Bosch hub 45 Nm / 360 Wh | Gates belt, 1-speed | Lowstep | 20.50 kg (M) |
| Inbound+ 2 B 540 LS | Bosch hub 45 Nm / 540 Wh | Gates belt, 1-speed | Lowstep | 21.40 kg (M) |
| Inbound+ 2 R10 LS | Bosch hub 45 Nm / 600 Wh | Shimano CUES 10-speed | Lowstep | 22.40 kg (M) |
| Inbound+ 2 B 540 | Bosch hub 45 Nm / 540 Wh | Gates belt, 1-speed | Straight | 21.60 kg (L) |
Our take: this black B 540 LS weighs 900 g more than the B LS (20.50 kg in M) for 180 Wh more. Compared with the R10 LS (22.40 kg), it saves 1 kg but gives up the ten gears.
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LVR sizing advice Four sizes from S to XL, from 147 to 203 cm according to Trek. The low frame makes choosing easier; the main things to check are saddle height and reach. 70 mm stem in S and M, 110 mm in L and XL.
Source: Trek size guide. Bike fitting available in our Béziers shop. |
| Is the battery secure? | It locks into the frame with a key; remove it for charging. |
| Which lock should I choose? | An approved D-lock attached to a fixed point. |
| Are the brakes powerful? | Yes, hydraulic on 180 mm rotors, powerful and progressive. |
| Is the black elegant? | Yes, a deep, plain black, very understated. |
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The LVR Cycles verdict An understated, long-range urban Lowstep that relies on the simplicity of a belt and a 540 Wh battery. Its deep black gives it discreet elegance.
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Why buy from LVR Cycles? As a Trek retailer in Béziers, we advise you on locks and insurance, set up your position and handle Bosch diagnostics and belt checks 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.
Data sheet
Specific References
Electric trekking bike Trek Inbound+ 2 Lowstep belt black: Bosch hub 540 Wh, 180 mm brakes, 21.40 kg in M
