DISTRICT+ 4 N5 B LS - COBRA BLOOD | Doctorbike

DISTRICT+ 4 N5 B LS - COBRA BLOOD

€3,299.00
VAT incl.
TREK

Shipping to Italy: Free

Choose your size.

SizeAvailability
SAvailable from Mar 22, 2027
MAvailable from Mar 22, 2027
LAvailable from Apr 5, 2027
XLAvailable from Feb 8, 2027

Choose how to pay.

Store pickup or home delivery.Preparation, fitting and support: choose how to receive your bike ↗

Optional workshop pre-assembly: 25 € tax incl. for bikes. Discover the preparation Doctorbike

A closer look at the model

The bike in detail.

Designed with ease of driving and day-to-day use, District+ 4 N5 B Lowstep is a comfort-oriented, low-maintenance urban e-bike. The 5-speed Shimano NEXUS hub with internal gearbox and Gates CDX belt drive ensure smoothness and precision, while the Bosch Performance Line Smart System engine offers extremely powerful assistance.

A better way to produce aluminum - Starting from 2024, we started replacing traditional aluminium with reduced carbon footprint aluminum, produced with renewable energy. By October 2025, almost all the aluminum bikes produced, including this one, have made the transition, significantly reducing our environmental footprint.
The facts to help you choose

Details and specifications.

Brand
TREK
Reference
5351638-S
Colour
Red
Manufacturer colour
Cobra Blood
Fork
SR Suntour NEX-E25, helical spring, preload adjustment, QR 100mm, excursion 63mm
Headset
FSA IS-2 alloy, sealed cartridge bearings, 1-1/8" top, 1,5" bottom
Stem
Bontrager alloy, 31,8mm clamp, adjustable laugh, Blendr compatibility, length 110mm
Handlebar
Aluminium, 31,8mm clamp, rise 25mm, width 630mm
Grips
Herrmans Clik, ergonomico, lock-on // Herrmans Clik, ergonomico, lock-on
Brakes
Hydraulic disc Shimano MT200 // Hydraulic disc Shimano MT200
Crankset
ProWheel alloy, length 165mm
Front hub
Shimano Tourney HB-QC300, centerlock
Rear hub
Shimano Nexus C7000, 5 speed
Rims
Bontrager Kovee, double room, Tubeless Ready, 32 holes, width 23mm, Presta valve
Pedals
Pedals Bontrager City
Saddle
Bontrager Boulevard
Seatpost
Alloy, suspension, 31,6mm, length 300mm
Cassette
Gates CDX, 34 teeth
Tyres
Bontrager E6 Hard-Case Lite, reflective, stiff heel, 60tpi, 700x50mm
Battery
Bosch PowerTube 600
Motor
Bosch Performance Line, 250W, 75Nm, 25km/h
Frame
Aluminum frame Alpha Platinum Premium, PowerPack upholstered, cable passage integrated in the handlebar, QR 135x5mm
Display
Bosch Purion 200
Disc size
Shimano RT10, centerlock, 160mm // Shimano RT10, centerlock, 160mm
Availability date
2027-03-22
EAN13
197216424437
The value of choosing Doctorbike

Choose how to receive your new bike.

From preparation to your first ride: we support you in store and remotely. Two delivery options, the same Doctorbike care.

01 · Together, in store

Store pickup

We welcome you in Magenta for a personalised handover: riding-position adjustment, an explanation of the features and, where included, suspension setup.

For e-bikes and electronic components, we help with the dedicated apps. Before you leave, ask us about use, accessories and maintenance.

Discover the store ↗
02 · To your home in Italy

Courier delivery

The bike is shipped in the original package, with the assembly configuration provided by the parent company.

You want our workshop pre-assembled? You can add it to your cart or checkout: 25 € incl. tax per bike, only if you choose.

Final delivery operations depend on the preparation for transport. Follow the team's instructions; you can ask for assistance from the workshop.

Delivery times, costs and terms ↗
Your next ride starts here

Complete your ride.

Accessories, care products and everyday essentials to go with your purchase.

Un abbinamento di colore

Per la cura della bici

Un abbinamento di colore

Un abbinamento di colore

The details make the choice

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AvailabilityAvailable from Mar 22, 2027In stockIn stockIn stock
Available sizes
SMLXL
50 cm
58 cm62 cm
42 cm
MotorBosch Performance Line, 250W, 75Nm, 25km/hBosch Drive Unit Performance Line CX max. 100Nm (BDU38)Bosch Drive Unit Performance Generation 3 (75Nm) Cruise (250Watt), Smart SystemBosch Drive Unit Performance Generation 3 (75Nm) Cruise (250Watt), Smart System
BatteryBosch PowerTube 600Bosch PowerTube 800Bosch PowerTube 625Bosch PowerTube 500
FrameAluminum frame Alpha Platinum Premium, PowerPack upholstered, cable passage integrated in the handlebar, QR 135x5mmAluminium Superlite, Gravity Casting Technology, Efficient Comfort Geometry, Boost148, UDH™, Fully Integrated Battery, IC 3.0, Advanced Internal Cable Routing, Integrated SeatclampAluminium Superlite, Gravity Casting Technology, Efficient Comfort Geometry, Fully Integrated Battery, 1.5 Headtube, Semi Integrated CarrierAluminium Superlite, Comfort Ride Geometry, Tapered Headtube, Premium Comfort And Safety, Semi-Integrated Carrier, Fully Integrated Battery
Make an informed choice

Questions before you ride?

How do I check availability in my size?
The size table distinguishes in-stock items, online orders and sold-out items. For sizes available on request, use the contacts in that row to confirm availability and lead times with our team. Only variants available for online purchase can be added to your basket.
Can I test a bike before deciding?
The Doctorbike Bike Test is available by category, rather than for every individual model. Our team will confirm the category, size and test availability with you.
Can I get help with size and riding position?
Yes. Talk to our team and explore bike fitting with Velosystem® technology, with dedicated measurements and adjustments.
Who should I contact for servicing?
Contact our certified workshop in Magenta. Arrange the work and an appointment with us: our service continues after purchase.
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