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This black version of the Trek Powerfly+ 4 Gen 5 rolls on 2.40 inch Bontrager Montrose Comp tyres, whereas the other two colourways get XT3 Comps. Everything else stays the same: Bosch Performance Line CX motor, removable 600 Wh battery, SR Suntour XCR 34 fork and 10-speed Shimano CUES, for 23.10 kg in size M according to Trek. Gloss Dark Star/Matte Dark Web plays on two blacks, one gloss, the other matt.
| 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, Bosch smart system; assist cuts out at 25 km/h in Europe |
| Battery | Bosch PowerTube 600 Wh, integrated in the down tube and removable |
| Controls / display | Bosch Purion 200 on the bar |
| Fork | SR Suntour XCR 34, air spring, 2CR damper, hydraulic lockout, Boost110 15 mm axle, 100 mm in S, 120 mm from M to XL |
| 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 double-wall 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 | 23.10 kg in size M (Trek figure) |
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At a glance
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For the mountain biker who links country lanes, tracks and easy trails in the same ride, or who sets off from home by bike to reach the trails. It will also appeal to anyone who wants an understated e-MTB without loud colours.
Alpha Platinum aluminium, the foundation of the Powerfly+. Trek groups its alloys under the Alpha name, and Platinum is one of the top grades in the family, just below the Alpha NEXT Platinum of the Fuel models. On this Powerfly+ 4, it forms a hardtail frame that houses the battery in the down tube, protects the motor under a Motor Armor skid plate and routes the cables internally.
| Alpha Platinum (Powerfly+) | Alpha Gold (Marlin+) | OCLV Mountain carbon (Rail+ 9.7 / 9.8) | |
| Level | Top grade of Trek aluminium | Aluminium of the entry-level e-MTB | Trek mountain bike carbon |
| Construction | Shaped tubes, battery housed in the down tube | Shaped tubes, compact battery | Layers compacted under heat, impact-resistant lay-up |
| Reference bike | Powerfly+ 4, 23.10 kg (M) | Marlin+ 8, 21.89 kg (M) | Rail+ 9.7 / 9.8 full-suspension |
| What it means | Tough, takes a big battery | Lighter, less powerful motor | Reserved for high-end full-suspension bikes |
Put simply: the Powerfly+ 4 gives you the most powerful Bosch motor in the hardtail range with a 600 Wh battery and deliberately simple mechanics. It is the lightest version of the Powerfly+ 4, at 23.10 kg in M.
The RIB 2.0 system lets you take the battery out of the frame in a few seconds, with a secondary retainer that stops it from falling when you unlock it. You charge it in your flat or at the office, and the bike becomes lighter to lift onto a bike rack.
The Bosch Performance Line CX motor modulates its help according to the force you put through the pedals: in Europe the assist cuts out at 25 km/h, for 250 W rated. On the back roads between the vineyards and villages around Béziers, you will often exceed that speed on the flat, and then the CUES drivetrain does the work.
| Model | Motor / battery | Suspension (M) | Drivetrain | Weight (M) |
| Marlin+ 8 | Bosch Active Line Plus / 400 Wh | 120 mm fork | Shimano Deore 12-speed | 21.89 kg |
| 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+ 6 (TranzX post, Kovee rims) | Bosch CX / 800 Wh | 120 mm fork (100 in S) | Shimano 12-speed | 24.10 kg |
Our take: with the same frame and battery, this black colourway stands out from the other two Powerfly+ 4 versions with its Montrose Comp tyres. Compared with the Powerfly+ 6 (24.10 kg in M, 800 Wh, dropper post), it remains simpler and lighter.
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LVR sizing advice If you are between sizes, the smaller one makes the bike easier to handle when stationary and in hairpins, the larger one more settled on fast tracks. Size S rolls on 27.5 inch wheels with a 100 mm fork; from M to XL, 29 inch wheels and 120 mm.
Source: Trek size guide. Bike fitting available in our Béziers shop. |
| Montrose or XT3, what's the difference? | Two 2.40 inch Bontrager tyres; we help you choose according to your terrain and swap the tyres if needed. |
| Can it be ridden in the rain? | Yes, the Bosch system is designed for rain; just avoid pressure washers. |
| How should the bike be transported? | Remove the battery, then use a towbar bike rack rated for the weight of an e-MTB. |
| Does the black show marks? | Gloss black shows dust, while matt black cleans up without polish. |
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The LVR Cycles verdict A discreet, versatile Powerfly+ 4, at ease on tracks as well as road links thanks to its 2.40 inch Montrose tyres. The double black, gloss and matt, gives it a sober, polished look.
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Why buy from LVR Cycles? As a Trek retailer in Béziers, we show you how to remove the RIB 2.0 battery, set up your fork and carry out Bosch motor diagnostics at every service.
Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.
Data sheet
Specific References
Aluminium hardtail electric mountain bike Trek Powerfly+ 4 black: Bosch CX 600 Wh, Montrose Comp tyres, 23.10 kg in M
