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Aluminium electric road bike Trek Domane+ AL 5 105 viper red 11-speed

Aluminium electric road bike Trek Domane+ AL 5 in red: 40 Nm hub motor, 250 Wh, 105, 14.06 kg in 56

kr22,879.61 Incl. Tax

~~kr35,432.33~~ MSRP

-35%

Recommended supplier selling price in 2026

Color

Size

56cm

Size charts

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Trek Domane+ AL 5 Viper Red: a simple, accessible electric road bike

The Trek Domane+ AL 5 combines an Alpha Series 100 aluminium frame, a carbon fork and HyDrive assist: a 40 Nm Hyena motor housed in the rear hub, powered by a 250 Wh battery hidden in the down tube. A Shimano 105 2x11 groupset and hydraulic disc brakes complete a package weighing 14.06 kg in size 56 according to Trek. Its Viper Red paintwork is a bright, rich red that stands out from a long way down the road.

Technical specifications

Frame	Alpha Series 100 aluminium, rear hub motor, tapered head tube, internal cable routing, Flat Mount, rack and mudguard mounts
Fork	Domane+ carbon, alloy tapered steerer, internal hose routing, mudguard mounts, Flat Mount, 12x100 mm thru axle
Motor	Hyena rear hub motor (HyDrive system): 40 Nm, 250 W; bottom bracket torque sensor
Battery	250 Wh, integrated in the down tube
Drivetrain	Shimano 105 R7000 2x11, FSA Vero Pro 50/34 172.5 mm chainset, 11-34 cassette
Brakes	Shimano 105 hydraulic BR-R7170 Flat Mount, RT66 160 mm rotors
Wheels / tyres	Formula RX-812 front hub, Bontrager Paradigm Tubeless Ready 21 mm rims / Bontrager R1 Hard-Case Lite 700x32 mm
Cockpit	Bontrager Elite IsoZone VR-SF alloy 42 cm handlebar, Bontrager Elite 100 mm 7° stem, Blendr compatible
Saddle / seatpost	Bontrager Verse Comp 145 mm, steel rails / Bontrager carbon 27.2 mm seatpost, 8 mm offset
Weight	14.06 kg in size 56 (Trek figure)

At a glance

✓ Alpha Series 100 alloy frame	✓ Hyena 40 Nm hub motor
✓ Integrated 250 Wh battery	✓ Shimano 105 2x11, 11-34
✓ 105 hydraulic brakes	✓ 14.06 kg in size 56

Who is it for?

For the rider getting back on the road after a break, or who wants to keep riding with a faster group without finishing every loop in the red. As this colour is offered in size 56, it suits riders from 174 to 180 cm.

The LVR workshop view

Alpha aluminium, Trek's solid foundation. The Domane+ AL 5 is built around an Alpha Series 100 aluminium frame, the same grade as the entry-level Domane AL. Its down tube conceals a 250 Wh battery and the rear wheel carries the motor: the bottom bracket keeps the look of a conventional bike, backed by a torque sensor that measures your effort. The carbon fork takes care of filtering out some of the road buzz.

	Domane+ AL 5 (Alpha Series 100)	Domane+ ALR 5 (Alpha Series 300)	Domane+ SLR (OCLV Series 800)
Level	Entry-level aluminium, motor in the wheel	Aluminium, mid-drive motor	Carbon, mid-drive motor
Construction	250 Wh battery in the down tube	TQ HPR60 and 360 Wh battery	TQ HPR50 or HPR60, 360 Wh, IsoSpeed
Reference bike	AL 5: 14.06 kg (56)	ALR 5: 14.39 kg (ML)	SLR 6: 12.85 kg (56)
What it changes	Simple, conventional chainset	More torque, 1x12 drivetrain	1.21 kg lighter, carbon frame

In short: the AL 5 is the simplest take on the Domane+ in Trek's range. Its 40 Nm wheel motor and 250 Wh battery are aimed at training and brisk leisure rides, yet it keeps a proper Shimano 105 groupset and hydraulic disc brakes.

With the motor in the rear wheel, the bottom bracket is left free: you keep a conventional FSA 50/34 chainset, and a torque sensor meters the assist according to how hard you press on the pedals. The harder you push, the more it helps, which avoids the feeling of being shoved along that you get with systems reacting only to crank rotation.

At 250 Wh, the battery is smaller than the 360 Wh of the TQ-powered Domane+ models: it suits rides of a few hours, as long as you manage the assist on the climbs. The 32 mm tyres and carbon fork smooth out the back roads of the Béziers hinterland, and the mudguard and rack mounts open the door to everyday journeys. Assistance cuts out at 25 km/h, as on any e-bike.

Which Domane+ should you choose?

Model	Frame	Motor	Drivetrain	Weight (size)
Domane+ AL 5	Alpha Series 100 alloy	40 Nm hub motor, 250 Wh	Shimano 105 2x11	14.06 kg (56)
Domane+ ALR 5	Alpha Series 300 alloy	TQ HPR60, 360 Wh	SRAM Apex XPLR 1x12	14.39 kg (ML)
Domane+ SLR 6	OCLV Series 800 carbon	TQ HPR50, 360 Wh	Shimano 105 Di2 2x12	12.85 kg (56)
Domane+ SLR 7 HPR60	OCLV Series 800 carbon	TQ HPR60, 360 Wh	Shimano Ultegra Di2 2x12	12.65 kg (56)

Our take: at 14.06 kg in size 56, the AL 5 weighs close to the ALR 5 (14.39 kg in ML), but the latter brings 60 Nm at the bottom bracket and 360 Wh. The Domane+ SLR 6 drops to 12.85 kg with a carbon frame and Shimano 105 Di2.

LVR sizing advice

This colour is offered in size 56, which Trek recommends for riders from 174 to 180 cm with an inside leg of 81 to 85 cm. The 330 mm carbon seatpost leaves room for saddle height adjustment, and the 100 mm stem can be swapped in the workshop if the reach doesn't suit you.

Size	56
Rider (cm)	174-180
Inside leg (cm)	81-85
Cranks (mm)	172.5
Handlebar (cm)	42
Stem (mm)	100
Seatpost (mm)	330

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

Your questions

Where is the motor?	In the rear wheel hub; the chainset stays that of a conventional road bike.
How is the assist metered?	By a torque sensor at the bottom bracket, which measures your effort.
Can you fit mudguards?	Yes, the frame and fork have the mounts, as well as a rear rack mount.
Is the red eye-catching?	Yes, Viper Red is a bright, rich red that is highly visible.

The LVR Cycles verdict

An accessible electric road bike, with a proper Shimano 105 groupset and hydraulic brakes, to rediscover the joy of long rides. The Viper Red paintwork gives it a sporty look and makes it easy to spot.

Pros
+ Shimano 105 and hydraulic brakes
+ Torque sensor for smooth, progressive assist
+ Mudguard and rack mounts

Cons
- More limited 250 Wh battery
- Less torque than the TQ motors
- Only in size 56 in this colour

Why buy from LVR Cycles? In Béziers, our workshop sets up your Domane+ AL 5, looks after the hub motor whenever the rear wheel comes out and shows you how to care for the battery so it lasts.

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-5270315

Data sheet