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Electric city bike Trek District+ 3 N7 B LS lunar silver 540 Wh

Electric city bike Trek District+ 3 Lowstep Gates belt grey: Bosch 540 Wh, Nexus 7, 27.20 kg in L

$3,031.65 Incl. Tax

~~$3,343.85~~ MSRP

Recommended supplier selling price in 2026

Color

Grey

Size

Size charts

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Trek District+ 3 N7 B Lowstep Lunar Silver: clean right down to your trouser hems

The Trek District+ 3 N7 B Lowstep replaces the chain with a Gates belt: no grease, no noise, no marks on your clothes. It keeps the Bosch Active Line Plus motor, the 540 Wh PowerTube battery and the Nexus 7-speed hub, on a step-through frame equipped for town. Trek quotes 27.20 kg in size L. Its Lunar Silver is a light, bright silver grey.

Technical specifications

Frame	Alpha Platinum aluminium Lowstep (low step-over), removable integrated battery, cables integrated through the cockpit, 135x5 mm quick-release rear axle
Motor	Bosch Active Line Plus, Bosch smart system, 60 Nm (Trek figure); assistance cuts out at 25 km/h
Battery	Bosch PowerTube 540 Wh, integrated into the down tube and removable
Controls / display	Bosch Purion 200 on the handlebar
Drivetrain	Shimano Nexus C3001 7-speed internal gear hub, Gates CDC CenterTrack belt, 22T sprocket, ProWheel alloy 165 mm chainset
Fork	SR Suntour NEX-E25 coil spring, adjustable preload, 60 mm travel, 100 mm quick release
Brakes	Shimano MT200 hydraulic disc, Shimano RT10 centerlock 160 mm rotors
Wheels / tyres	Bontrager Kovee double-wall Tubeless Ready 23 mm rims, Shimano centerlock hubs / Bontrager E6 Hard-Case Lite 700x50 reflective tyres
Cockpit	Alloy 630 mm handlebar, 25 mm rise; Bontrager alloy adjustable-angle stem, Blendr compatible, 70 or 110 mm depending on size; ergonomic grips
Saddle / seatpost	Bontrager Boulevard saddle, alloy suspension seatpost 31.6 mm, 300 mm
Equipment	SKS front and rear mudguards, MIK-compatible alloy rear rack, Pletscher Comp Flex 18 kickstand, city pedals
Weight	27.20 kg in size L (Trek figure)

At a glance

✓ Gates CDC CenterTrack belt	✓ Nexus 7-speed internal gear hub
✓ Bosch Active Line Plus	✓ Removable PowerTube 540 Wh
✓ 60 mm suspension fork	✓ 27.20 kg in size L

Who is it for?

For anyone who rides in work clothes, a dress, a suit or light trousers, and never wants to use a trouser clip or get a black mark on their calf again. It's for those who want a bike ready to go every morning, with no drivetrain maintenance.

The LVR workshop view

The Gates belt: goodbye greasy chain. Instead of a chain, this District+ transmits your pedalling through a carbon-fibre-reinforced Gates CDC belt, guided by a central CenterTrack rail that stops it jumping off. It needs no grease, doesn't rust and won't stain your trousers. Combined with the Nexus hub, which keeps the gears inside, it forms the cleanest and quietest drivetrain in the District+ 3 range.

	Nexus hub + chain	Nexus hub + Gates belt	Shimano CUES derailleur
How it works	Gears hidden in the rear hub	Gears in the hub, carbon belt	External sprockets and derailleur
Shifting	Possible at a standstill, at red lights	Possible at a standstill, at red lights	While pedalling, smoothly
Maintenance	Low, chain to grease	Very low, no greasing	Regular: cleaning, adjustment
Who for	Simple urban journeys	Everyday use without the grime	Varied terrain, sporty rides

In short: the N7 B takes the 540 Wh battery of the N7 540 and replaces the chain with a Gates belt. You gain cleanliness and peace of mind on maintenance, ideal if the bike lives in the hallway or the office bike room.

A Gates belt has no metal links: it's a toothed polymer band reinforced with carbon fibre that never needs lubricating. A rinse with water is enough when it gets dusty. Its central CenterTrack rail keeps it perfectly aligned on the 22-tooth sprocket, even over kerbs and cobbles.

With no derailleur and no chain, the drivetrain stays silent: what you mostly hear is the tyres rolling. The Active Line Plus motor, also discreet, provides gentle assistance that suits this calm bike well, up to the legal speed of 25 km/h.

Which District+ should you choose?

Model	Motor	Battery	Drivetrain	Weight (L)
District+ 3 N7 540 LS	Bosch Active Line Plus	540 Wh	Nexus 7-speed hub, chain	27.70 kg
District+ 3 N7 B LS	Bosch Active Line Plus	540 Wh	Nexus 7-speed hub, Gates belt	27.20 kg
District+ 4 N5 B LS	Bosch Performance Line	600 Wh	Nexus 5-speed hub, Gates belt	27.70 kg
District+ 3 R9 540 LS	Bosch Active Line Plus	540 Wh	CUES 9-speed derailleur	24.30 kg

Our take: with the same battery, this N7 B weighs 500 g less than the chain-driven N7 540 (27.20 kg versus 27.70 kg). The N5 B moves up to the Performance Line motor and the PowerTube 600 battery, for 27.70 kg.

LVR sizing advice

Four sizes cover riders from 147 to 203 cm. For an upright, relaxed ride in the town centre, go for the smaller size if you're unsure; for long rides, the larger size gives your legs more room. The L and XL get a 110 mm stem, compared with 70 mm on the S and M.

Size	S	M	L	XL
Rider height (cm)	147-155	155-173	170-185	185-203
Inseam (cm)	69-88	77-96	80-99	86-105
Stem (mm)	70	70	110	110

Source: Trek size guide. Bike fitting available in our Béziers shop.

Your questions

Does the belt need greasing?	Never: just a rinse with water when it's dusty.
Can the belt jump off?	The central CenterTrack rail keeps it aligned on the sprockets.
How long does it last?	A Gates belt wears slowly; we check its tension and condition at every service.
Is silver suitable for everyday use?	Yes, this light grey hides dust well and stays elegant.

The LVR Cycles verdict

The District+ for riders in everyday clothes, with a clean, quiet belt drive. Lunar Silver gives it a light, modern look.

Pros
+ Grease-free Gates belt
+ Silent operation
+ 540 Wh battery

Cons
- Belt repairs more specialised
- Seven gears for steep hills

Why buy from LVR Cycles? In Béziers, our workshop checks the Gates belt tension, services the Nexus hub and updates your Bosch system.

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

Reference TRK-5354977

Data sheet