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Aluminium hardtail electric mountain bike Trek Powerfly+ 4 800 Wh CUES dark star / supernova 10-speed

Aluminium hardtail electric mountain bike Trek Powerfly+ 4 800 Wh black: Bosch CX 800 Wh, XCM 120 mm, 24.90 kg in M

$5,342.18 Incl. Tax

Color

Black

Size

Size charts

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Description
Product Details

Trek Powerfly+ 4 800 Wh Dark Star: the big battery, kept simple

The Trek Powerfly+ 4 800 Wh Gen 5 brings together the essentials for heading far: a Bosch Performance Line CX motor, an 800 Wh PowerTube battery, a 120 mm SR Suntour XCM 34 fork on every size and a 10-speed Shimano CUES drivetrain. It weighs 24.90 kg in size M according to Trek. Dark Star / Supernova pairs a deep black with brown touches.

Technical specifications

Frame	Alpha Platinum aluminium, removable integrated RIB 2.0 battery, Motor Armor motor protection, Control Freak internal routing, tapered head tube, Boost148 12 mm axle
Motor	Bosch Performance Line CX; assist cuts out at 25 km/h in Europe
Battery	Bosch PowerTube 800 Wh, integrated in the down tube and removable
Fork	SR Suntour XCM 34, air spring, lockout, rebound adjustment, Boost110 15 mm axle, 120 mm on all sizes
Drivetrain	Shimano CUES 1x10 Linkglide: U6000 GS derailleur, FSA Bosch 36T 165 mm chainset, LG300 11-48 cassette, LG500 chain
Brakes	Disc, Tektro Centerlock 203 mm rotors
Wheels / tyres	Bontrager Connection rims, Shimano TC500 hubs / Bontrager Montrose Comp 2.40 in (27.5 in S, 29 above)
Cockpit	Bontrager Comp alloy 780 mm handlebar, 40 mm rise, Bontrager Comp 50 mm stem, Blendr compatible
Saddle / seatpost	Bontrager Commuter Comp / Bontrager alloy 31.6 mm seatpost, 330 to 400 mm depending on size
Weight	24.90 kg in size M (Trek figure)

At a glance

✓ Bosch Performance Line CX	✓ Removable PowerTube 800 Wh
✓ SR Suntour XCM 34, 120 mm	✓ Rebound adjustment
✓ 10-speed Shimano CUES	✓ 24.90 kg in size M

Who is it for?

For the rider who wants long range without a dropper post or a 12-speed drivetrain they won't use. It suits long rides on tracks and trails, solo or with the family.

The LVR workshop view

Alpha Platinum aluminium, with room for 800 Wh. Going from 600 to 800 Wh doesn't change the frame: the Powerfly+ 4 800 Wh uses the same Alpha Platinum aluminium, a high grade of Trek alloy, and the same battery housing. Only the capacity, fork and tyres differ from the 600 Wh version.

	Alpha Platinum (Powerfly+)	Alpha Gold (Marlin+)	OCLV Mountain carbon (Rail+ 9.7 / 9.8)
Level	High-level Alpha aluminium	Marlin+ aluminium	Trek mountain bike carbon
Construction	Battery housing for 600 or 800 Wh	CompactTube 400 Wh	Impact-resistant OCLV Mountain
Reference bike	Powerfly+ 4 800 Wh, 24.90 kg (M)	Marlin+ 8, 21.89 kg (M)	Rail+ 9.7 / 9.8
What it means	More energy, same frame	Lighter, less energy	Carbon full suspension

Put simply: compared with the 600 Wh Powerfly+ 4 (23.10 kg), this 800 Wh model weighs 24.90 kg in M and brings a bigger battery and a 120 mm SR Suntour XCM fork on every size, with rebound adjustment.

The 800 Wh battery is the largest in the Powerfly+ range: it lets you stay in higher assist modes on long climbs, or go further in eco mode. Its real-world range depends on terrain, weight and temperature; we help you estimate it based on your routes.

The SR Suntour XCM 34 fork offers 120 mm of travel even in size S, with an air spring, lockout and rebound adjustment: you control how quickly the fork returns after an impact. In Europe the electric assist stops at 25 km/h, for a 250 W rated motor.

Which Powerfly+ should you choose?

Model	Motor / battery	Suspension (M)	Drivetrain	Weight (M)
Powerfly+ 4	Bosch CX / 600 Wh	120 mm fork (100 in S)	Shimano CUES 10-speed	23.10 kg
Powerfly+ 4 800 Wh (XCM fork)	Bosch CX / 800 Wh	120 mm fork	Shimano CUES 10-speed	24.90 kg
Powerfly+ 4 Equipped 800 Wh (XCM fork)	Bosch CX / 800 Wh	120 mm fork	Shimano CUES 10-speed	27.20 kg
Powerfly+ 6 (TranzX post, Kovee rims)	Bosch CX / 800 Wh	120 mm fork (100 in S)	Shimano 12-speed	24.10 kg

Our take: compared with the 600 Wh Powerfly+ 4 (23.10 kg), this 800 Wh model gains 1.80 kg, 200 Wh and an XCM fork. The Powerfly+ 6 (24.10 kg) adds a dropper post and 12 speeds for a similar weight.

LVR sizing advice

A special feature of this version: the fork keeps 120 mm even in size S, which rolls on 27.5 inch wheels. From M to XL, 29 inch wheels. If you are between sizes, the shorter one is easier to manoeuvre on a bike of this weight.

Size	S	M	L	XL
Rider height (cm)	155-165	165-177	177-188	188-195
Inseam (cm)	74-78	79-83	84-89	89-91
Fork (mm)	120	120	120	120
Wheels (in)	27.5	29	29	29
Seatpost (mm)	330	360	400	400

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

Your questions

Why 800 Wh?	For long rides or big climbs, with more margin in the higher modes.
What can be adjusted on the XCM?	Air pressure, rebound and lockout.
Is CUES reliable?	Yes, it is designed to last under the torque of an electric motor.
Which sizes?	From S to XL; the fork keeps 120 mm on every size.

The LVR Cycles verdict

The simplest Powerfly+ with 800 Wh, with straightforward mechanics and an adjustable fork. Its deep black with brown accents gives it a sober, warm look.

Pros
+ 800 Wh battery
+ XCM fork with rebound adjustment
+ Durable CUES drivetrain

Cons
- Rigid seatpost
- 24.90 kg in M

Why buy from LVR Cycles? As a Trek retailer in Béziers, we set up the XCM fork for your weight, update your Bosch system and advise you on battery use.

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-5348579

Data sheet