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With its 160 mm RockShox Psylo Silver RC fork from M to XL, the Trek Powerfly+ FS 5 stands out with a particularly forgiving front end for a Powerfly+ FS. Bosch CX motor, 800 Wh battery, 120 mm at the rear and a 12-speed Shimano drivetrain: Trek quotes 24.58 kg in size M. Its Fury Red colourway is a solid vivid red.
| Frame | Alpha Platinum aluminium, removable integrated RIB 2.0 battery, Motor Armor protection, Mino Link adjustable geometry, adjustable suspension leverage, ABP, UDH hanger, Boost148, rack and mudguard mounts |
| Motor | Bosch Performance Line CX, 250 W rated, assist up to 25 km/h (European version) |
| Battery | Bosch PowerTube 800 Wh, smart system |
| Controls / display | Bosch Purion 200 |
| Suspension | RockShox Psylo Silver RC Solo Air, 130 mm in S, 160 mm from M to XL / RockShox Deluxe Select 210x50 mm, 120 mm |
| Drivetrain | Shimano 1x12: Deore M8200 long-cage derailleur, XT M8100 10-51 cassette, FSA 160 mm cranks |
| Brakes | Shimano MT620 4-piston hydraulic, RT64 203 mm rotors |
| Wheels / tyres | Shimano TC500 hubs, Bontrager Kovee 23 mm rims / Gunnison Pro XR 2.40 (29 in, 27.5 in in size S) |
| Cockpit | Bontrager Comp 780 mm handlebar, 40 mm rise, Bontrager Comp 50 mm stem |
| Saddle / seatpost | Bontrager Verse P3 / TranzX JD-YSI34, 100 to 170 mm depending on size |
| Weight | 24.58 kg in size M (Trek figure, with tubeless sealant, no inner tubes) |
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At a glance
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For the mountain biker who enjoys technical descents and appreciates a front end that soaks up steps and rock gardens, while keeping a versatile e-MTB for long loops. It suits anyone who rides the steep trails of the Montagne Noire.
Adjustable suspension ratio, the frame's trump card. This frame offers an adjustment that is rare at this price point: an adjustable suspension ratio, which changes the way the shock firms up at the end of its stroke. More progressive, it resists landings better; more linear, it makes fuller use of its 120 mm over loose rocks. On the FS 5, which gets a long-travel fork from size M, this setting helps balance the front and rear.
| Alpha Platinum (Powerfly+ FS) | Alpha NEXT Platinum (Fuel+ EX 8) | OCLV Mountain (Rail+ 9.7 / 9.8) | |
| Level | Adjustable e-MTB aluminium | High-end mountain bike aluminium | OCLV Mountain carbon |
| Construction | Adjustable suspension ratio and geometry | Thinner tubes | Impact-oriented carbon moulding |
| Reference bike | Powerfly+ FS 5, 24.58 kg (M) | Fuel+ EX 8 | Rail+ 9.7, 23.73 kg (M) |
| What it means | A frame you adapt to your terrain | Weight saving, more discreet motor | 850 g lighter than this FS 5 |
Put simply: the FS 5 is the missing middle step between the 10-speed FS 4 and the FS 6. It moves up to 12 speeds and 4-piston Shimano brakes, and comes down to 24.58 kg in M, 920 g less than the FS 4 800 Wh.
The Psylo Silver RC fork, with its Solo Air spring and Motion Control damper, is simple to set up: air pressure for your weight, rebound and low-speed compression. Combined with the frame's adjustable suspension ratio, it lets you balance the bike for descending or for all-round riding.
The 160 mm cranks and the TranzX dropper, 150 to 170 mm depending on size, complete a package geared towards riding skills. The assist stays road-legal, cutting out at 25 km/h with 250 W nominal like all European e-bikes; updates are done via the Bosch eBike Flow app.
| Model | Motor / battery | Rear / front travel | Drivetrain | Weight (M) |
| Powerfly+ FS 4 800 Wh | Bosch CX / 800 Wh | 120 / 130 mm | Shimano CUES 10-speed | 25.50 kg |
| Powerfly+ FS 5 | Bosch CX / 800 Wh | 120 / 160 mm | Shimano Deore/XT 12-speed | 24.58 kg |
| Powerfly+ FS 6 (Fox 36) | Bosch CX / 800 Wh | 120 / 140 mm | SRAM Eagle 70 12-speed | 25.08 kg |
| Rail+ 5 | Bosch CX / 800 Wh | 160 / 160 mm | Shimano Deore 12-speed | 24.78 kg |
Our take: for a more generous front end, the FS 5 offers 160 mm from size M for 24.58 kg, while the Rail+ 5, an enduro e-MTB, has 160 mm front and rear for 24.78 kg. The FS 5 remains more versatile.
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LVR sizing advice A quirk of the FS 5: size S gets a 130 mm Psylo and 27.5-inch wheels, sizes M to XL a 160 mm Psylo with 29-inch wheels. If you are between two sizes, bear this change of fork in mind; we explain it in store.
Source: Trek size guide. Bike fitting available in our Béziers shop. |
| Is 160 mm enduro territory? | No, with 120 mm at the rear it stays versatile; the Rail+ 5 is more enduro-oriented. |
| Does size S get the same fork? | No, in S the Psylo offers 130 mm with 27.5-inch wheels. |
| Is the red a solid colour? | Yes, it is a solid vivid red, simple and bright. |
| Does the fork need servicing? | Yes, regular servicing of the seals and oil; we do it in the workshop. |
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The LVR Cycles verdict The Powerfly+ FS with a taste for descending, with a long fork and short cranks. The solid vivid red makes its ambitions clear.
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Why buy from LVR Cycles? In Béziers, we set up your Psylo fork and the suspension ratio, and look after RockShox servicing and Bosch support for your Powerfly+ FS 5.
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