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The Trek District+ 4 with a straight top tube is an electric city bike designed to be ridden every day without a second thought: 75 Nm Bosch Performance Line motor, 545 Wh battery housed in the down tube, five-speed Shimano Nexus hub and Gates CDX belt drive. Trek quotes 26.20 kg in size L. This Trek Black Satin colour, an understated satin black that doesn't show fingerprints, is offered in XL and XXL.
| Frame | Hydroformed aluminium, removable integrated battery, internal cable routing, Motor Armor protection |
| Motor | Bosch Performance Line, 250 W, 75 Nm, Bosch smart system; assistance cuts out at 25 km/h |
| Battery | 545 Wh, housed in the down tube and removable |
| Controls / display | Bosch Intuvia 100 (handlebar display) |
| Drivetrain | Shimano Nexus C7000 5-speed internal gear hub, Gates CDX belt drive, ProWheel 175 mm chainset |
| Brakes | Tektro HD-M275 hydraulic disc, Shimano 160 mm rotors |
| Fork | SR Suntour NVX30, coil spring, adjustable preload, 60 mm travel |
| Wheels / tyres | Bontrager Connection double-wall rims / Bontrager E6 Hard-Case Lite 27.5 x 2.40 in with reflective sidewall |
| Equipment | SKS front and rear mudguards, aluminium rear rack (25 kg max), Pletscher Comp Flex 18 kickstand, Bontrager City pedals |
| Cockpit | Alloy 630 mm handlebar, 25 mm rise, Bontrager adjustable stem, Blendr compatible, 105 mm, Satellite Elite grips |
| Saddle / seatpost | Bontrager Boulevard / alloy suspension seatpost 31.6 mm |
| Weight | 26.20 kg in size L (Trek figure) |
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At a glance
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For the tall rider, from 186 to 203 cm, looking for an urban electric bike in their size to get to work, drop the children off or do the shopping, and who doesn't want to spend their Sundays greasing a chain. Mudguards, rear rack and kickstand are already fitted.
Belt drive and internal gear hub: the District+ 4's winning pair. On this straight-top-tube frame, Trek combines a Shimano Nexus hub with five gears housed inside the rear wheel and a Gates CDX belt in place of the chain. With the gears protected inside the hub, there is no derailleur sticking out under the bike; the belt, for its part, doesn't rust and needs no grease. The table below shows where this choice sits among the three drivetrains in the District+ range.
| Nexus 5 + chain | Nexus 5 + Gates CDX belt | Enviolo + Gates CDX belt | |
| How it works | 5 gears in the hub, conventional chain | 5 gears in the hub, toothed belt | Continuously variable, no steps |
| Maintenance | Chain needs cleaning and lubing | No grease or regular cleaning | No grease, sealed hub |
| Reference bike | District+ 4 Guard / Coaster Lowstep | District+ 4, 4 Lowstep, Coaster Belt | District+ 5 and 5 Lowstep |
| What it means | Simple, common parts | Clean and quiet every day | The finest gear progression |
In other words: the District+ 4 is the urban electric bike designed to be ridden every day with no drivetrain maintenance, with a 75 Nm Bosch motor that flattens the hills. Its straight-top-tube frame is aimed at tall riders: XL and XXL here.
An internal gear hub hides its gears inside the rear wheel, sheltered from rain and dust. You can change gear when stationary, at a red light, to pull away in a low gear: that is invaluable in the town centre, where you stop often. With five gears and a 75 Nm motor, the streets climbing up to Saint-Nazaire cathedral are taken without standing on the pedals.
The 545 Wh battery comfortably covers daily use in town; it comes out of the frame so you can charge it at the office or in your flat. Like any e-bike sold in Europe, the Bosch motor stops assisting at 25 km/h. The 2.40-inch Bontrager E6 Hard-Case Lite tyres with reflective sidewalls add comfort and side visibility.
| Model | Motor | Battery | Drivetrain | Weight (size) |
| District+ 3 | Bosch Active Line Plus, 50 Nm | 545 or 800 Wh | Shimano Nexus 8-speed, chain | 26.60 kg (L) |
| District+ 4 | Bosch Performance Line, 75 Nm | 545 or 800 Wh | Nexus 5-speed, Gates CDX belt | 26.20 kg (L) |
| District+ 4 Lowstep | Bosch Performance Line, 75 Nm | 545 or 800 Wh | Nexus 5-speed, Gates CDX belt | 25.60 kg (M) |
| District+ 5 | Bosch Performance Line, 75 Nm | 545 or 800 Wh | Enviolo Trekking, Gates CDX belt | 27.10 kg (L) |
Our take: with the same frame and equipment, the 800 Wh version brings 255 Wh more for long journeys; the 545 Wh is enough if you charge every evening. Compared with the District+ 3 (Bosch Active Line Plus, 50 Nm), the District+ 4 gains 25 Nm of torque and the belt drive, for 400 g less in L according to Trek.
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LVR sizing advice This colour is offered in XL (186 to 197 cm) and XXL (196 to 203 cm). The straight top tube means stepping over it: if you often get on the bike carrying a bag or wearing a skirt, also look at the Lowstep version. 175 mm cranks and a 105 mm stem on both sizes.
Source: Trek size guide. Bike fitting available in our Béziers shop. |
| Is the District+ 4 available in size L? | In this black colour, it is offered in XL and XXL; Trek's reference weight is given for size L. |
| Does the belt wear out quickly? | No, it lasts much longer than a chain and needs no grease; we check its tension at each service. |
| Is the battery removable? | Yes, it slides out of the down tube so you can charge it indoors, at the office or at home. |
| Is the satin black fragile? | No, this satin finish hides the little marks of everyday use well. |
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The LVR Cycles verdict A satin black District+ 4 made for tall riders, ready for everyday journeys with its belt drive and five-speed hub. The 545 Wh battery is perfectly suited to urban use with regular charging.
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Why buy from LVR Cycles? In our Béziers workshop, we set the stem height to suit you, pair the Bosch system with your smartphone and check the belt tension 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 city bike Trek District+ 4 black: Bosch 75 Nm, 545 Wh, Gates belt, 26.20 kg in L
