Trek Powerfly+ FS: suspension setup & specs
The Trek Powerfly+ FS is an e-MTB for trail and touring with 130 mm of fork travel and 120 mm at the rear. It is powered by Bosch. Below you will find all 4 current builds with fork, shock and shock size, plus SAG values in millimetres and a tyre pressure table.
Calculate the setup for your Trek Powerfly+ FS →
All builds
Fork, shock, shock size (eye-to-eye length × stroke) and rear travel, motor, weight and price according to the manufacturer. Wheel size: 29.
| Build | Fork | Shock | Shock size | Rear travel | Motor | Weight | RRP | Calculator |
|---|---|---|---|---|---|---|---|---|
| 4 800 Gen 4 | RockShox Recon Silver (130 mm) | RockShox Deluxe Select R | – | 120 mm | Bosch 800 Wh | – | €4,199 | Setup → |
| 5 Gen 4 | RockShox Psylo Silver RC (130 mm) | RockShox Deluxe Select R | – | 120 mm | Bosch | – | €4,499 | Setup → |
| 6 Gen 4 | FOX AWL Rail HD (130 mm) | FOX Float Rhythm | – | 120 mm | Bosch | – | €4,999 | Setup → |
| 8 Gen 4 | FOX 36 Rhythm (130 mm) | FOX Float Rhythm | – | 120 mm | Bosch | – | €6,499 | Setup → |
How it compares
At 130 mm, fork travel is 20 mm shorter than the median of the “e-MTB for trail and touring” category (150 mm, 101 bikes). The rear offers 120 mm, 10 mm less than the front. On travel, it slots in between the Trek Powerfly+ and the Trek Fuel+ EX in the Trek range. The frame is made of aluminium.
Entry costs €4,199 for the 4 800 Gen 4 build – less than the category median of €5,500. The top build, 8 Gen 4, costs €6,499. For suspension, Trek combines components from FOX and RockShox. In total, 4 different forks are used, from the RockShox Recon Silver to the FOX 36 Rhythm. It is powered by Bosch with a 800 Wh battery.
Setup notes for this spec
- Fork (RockShox Recon Silver): air goes in through the valve on top of the left leg. After every change, compress the fork firmly a few times before measuring SAG.
- Rebound: turn the red FOX and RockShox adjuster fully closed first and count clicks from there – that way you can note settings and restore them later.
- Shock (RockShox Deluxe Select R): get on the bike in your normal riding position, step off carefully and read the O-ring. Always cycle the shock a few times after pumping.
- e-MTB: because of the extra weight, start with slightly more tyre pressure – the surcharge is already built into the table below.
Target SAG for the Trek Powerfly+ FS
Instead of percentages, this table gives SAG directly in millimetres, measurable with the O-ring on the stanchion and on the shock shaft. Change the pressure step by step until you reach the value; if Trek gives its own target SAG, use that.
130 mm fork (all builds)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 22 mm |
| Trail | 20 % = 26 mm |
| Enduro / rough | 22 % = 29 mm |
| Bike park | 20 % = 26 mm |
How to measure SAG is explained in our guide SAG setup.
Tyre pressure starting values
The values apply to 2.60″ wide tubeless tyres with a trail casing, including the e-MTB surcharge. With an inner tube add about 0.2 bar (2.9 psi), with an insert take off about 0.1 bar (1.5 psi).
| Ready-to-ride weight | Front | Rear |
|---|---|---|
| 60 kg | 1.40 bar (20 psi) | 1.60 bar (23 psi) |
| 70 kg | 1.52 bar (22 psi) | 1.72 bar (25 psi) |
| 80 kg | 1.64 bar (24 psi) | 1.84 bar (27 psi) |
| 90 kg | 1.76 bar (26 psi) | 1.96 bar (28 psi) |
| 100 kg | 1.88 bar (27 psi) | 2.08 bar (30 psi) |
| 110 kg | 2.00 bar (29 psi) | 2.20 bar (32 psi) |
| 120 kg | 2.12 bar (31 psi) | 2.32 bar (34 psi) |
Air pressure in the fork and shock
You will find a guide value for air pressure on the fork sticker (or on the shock) or in the suspension makers’ charts. Our calculator also takes riding style and rebound into account. In the end, measured SAG is what counts.