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Electric hybrid bike Trek FX+ 2 viper red

Electric hybrid bike Trek FX+ 2 red: Hyena 40 Nm hub motor, 250 Wh, 17.69 kg in M

$1,504.23 Incl. Tax

~~$2,786.56~~ MSRP

-46%

Recommended supplier selling price in 2026

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Trek FX+ 2 Viper Red: the lightweight electric hybrid bike for getting around town

The Trek FX+ 2 is an electric hybrid bike designed to get you quickly from A to B in town, without the weight of a conventional e-bike: 17.69 kg in size M according to Trek. Its 40 Nm Hyena motor is housed in the rear hub, its 250 Wh battery in the frame, and it comes fitted with mudguards, a rear rack and a kickstand. Like any e-bike, it assists you up to 25 km/h. Viper Red is a bright, bold red that stands out in traffic.

Technical specifications

Frame	Alpha Gold aluminium, internal cable routing, integrated battery, rack and mudguard mounts, kickstand mount
Fork	FX+ aluminium, internal brake hose, mudguard and rack mounts, 5 mm ThruSkew skewer
Motor	Hyena rear hub motor, 40 Nm, 250 W; bottom bracket torque sensor; assistance cuts out at 25 km/h
Battery	250 Wh, integrated in the down tube
Drivetrain	Shimano Altus M2000 long cage, HG200 11-36 9-speed cassette, ProWheel 42T 175 mm chainset, KMC E9S chain
Wheels / tyres	Bontrager Connection double-wall 20 mm rims / Bontrager H2 Comp 700x40 mm with reflective sidewalls
Equipment	SKS front and rear mudguards, MIK-compatible alloy rear rack (25 kg), Pletscher Comp 18 kickstand
Cockpit	Bontrager alloy 660 mm handlebar, 15 mm rise, Bontrager Comp 100 mm stem, Blendr compatible
Saddle / seatpost	Bontrager Sport / Bontrager alloy seatpost 31.6 mm, 400 mm
Weight	17.69 kg in size M (Trek figure)

At a glance

✓ Hyena 40 Nm hub motor	✓ Integrated 250 Wh battery
✓ Shimano Altus 9-speed 11-36	✓ Reflective 700x40 tyres
✓ Mudguards, rear rack, kickstand	✓ 17.69 kg in size M

Who is it for?

For the commuter who rides a few kilometres between home and work every day, for example from the outskirts of Béziers into the centre, and wants to arrive without breaking a sweat. As this colour is offered in XL, it is aimed at tall riders from 186 to 197 cm.

The LVR workshop view

The motor in the wheel: the lightweight solution. On the FX+ 2, the assistance comes from a Hyena motor housed in the rear hub, controlled by a torque sensor at the bottom bracket: the harder you push, the more it helps. The 250 Wh battery disappears into the down tube of the Alpha Gold frame, so the bike keeps the look of a classic hybrid and a weight under 18 kg.

	Hyena rear hub (FX+ 2, Dual Sport+ 2)	TQ HPR50 at the bottom bracket (FX+ 7)	Bosch CX at the bottom bracket (Allant+)
Claimed torque	40 Nm	50 Nm	The highest of these three systems
Battery	250 Wh in the down tube	TQ 360 Wh	545 or 800 Wh depending on the version
Reference bike	FX+ 2 LT, 17.75 kg (M)	FX+ 7, 19.30 kg (L)	Allant+ 6, 23.30 kg (L)
What it means	Light, simple, ideal in town	Discreet and natural, more torque	For steep climbs and heavy loads

In other words: the FX+ 2 focuses on lightness (17.69 kg in M) rather than power. Its 40 Nm motor supports steady pedalling in town and on the flat; for repeated steep gradients, a mid-drive motor such as the TQ on the FX+ 7 gives you more.

With a motor in the rear wheel, the chainset stays that of a conventional bike: a single 42-tooth steel chainring and a 9-speed Shimano 11-36 cassette, operated by an Altus derailleur. The torque sensor adjusts the assistance to your effort, which avoids any jerk when pulling away from a red light.

The 40 mm Bontrager H2 Comp tyres with reflective sidewalls absorb cobbles and kerbs, and can be seen from the side at night. The MIK-compatible rear rack takes 25 kg: enough to bring home your shopping from the Halles market or carry a laptop bag in a side pannier.

Which FX+ should you choose?

Model	Motor	Battery	Drivetrain	Weight
FX+ 2	Hyena rear hub 40 Nm	250 Wh	Shimano Altus 9-speed 11-36	17.69 kg (M)
FX+ 2 LT	Hyena rear hub 40 Nm	250 Wh	Shimano Acera 8-speed 11-40	17.75 kg (M)
FX+ 2 LT Midstep	Hyena rear hub 40 Nm	250 Wh	Shimano Acera 8-speed 11-40	17.65 kg (M)
FX+ 7	TQ HPR50 50 Nm	360 Wh	Shimano CUES 10-speed 11-48	19.30 kg (L)

Our take: the FX+ 2 (17.69 kg in M) and the FX+ 2 LT (17.75 kg) are on a par for weight; the FX+ 2 keeps a 9-speed 11-36 cassette whereas the LT moves to 8 speeds with 11-40, lower geared for climbing. The FX+ 7 steps up to 50 Nm with a TQ mid-drive motor, for 19.30 kg in L.

LVR sizing advice

Offered here in XL, for riders from 186 to 197 cm with an 87 to 93 cm inseam according to Trek, with 175 mm cranks and a 660 mm handlebar. We check saddle height and reach with you in store.

Size	XL
Rider height (cm)	186-197
Inseam (cm)	87-93
Cranks (mm)	175
Handlebar width (mm)	660
Stem (mm)	100
Seatpost (mm)	400

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

Your questions

Is the motor noisy?	A hub motor stays discreet; you mainly hear it when pulling away on high assistance.
Can it climb up to Saint-Nazaire?	Yes, with a 36-tooth sprocket and the motor's help, you can ride up seated at a steady pace.
What load can the rack take?	25 kg according to Trek, with clip-on MIK accessories.
Does the red stand out?	Yes, it is a bold red that clearly stands out in traffic.

The LVR Cycles verdict

A light, well-equipped electric hybrid bike that replaces the car for urban journeys without weighing as much as a heavy e-bike. Its bright red makes it highly visible in traffic.

Pros
+ 17.69 kg in M, easy to carry
+ Mudguards, rear rack and kickstand
+ Highly visible red

Cons
- 40 Nm of torque on steep gradients
- Only available in XL in this colour

Why buy from LVR Cycles? In Béziers, we prepare your FX+ 2, check the assistance system at every service and advise you on a lock and insurance suited to daily use in town.

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-5268335

Data sheet