Trek Powerfly+: suspension setup & specs
The Trek Powerfly+ is an e-hardtail with 100–120 mm of fork travel. It is powered by Bosch. Here you will find all 3 current builds with fork, plus matching SAG and tyre pressure starting values.
Calculate the setup for your Trek Powerfly+ →
All builds
Fork, motor, weight and price according to the manufacturer. Wheel size: 29.
| Build | Fork | Motor | Weight | RRP | Calculator |
|---|---|---|---|---|---|
| 4 800 Wh Gen 5 | SR Suntour XCM34 (120 mm) | Bosch 800 Wh | – | €3,299 | Setup → |
| 6 Gen 5 | RockShox Recon Silver RL (100 mm) | Bosch | – | €3,799 | Setup → |
| 8 Gen 5 | FOX AWL Rail HD (120 mm) | Bosch | – | €4,499 | Setup → |
How it compares
100–120 mm at the fork almost exactly matches the 120 mm median of the 27 bikes in the “e-hardtail” category in our database. Among Trek’s e-mountain bikes, the Trek Powerfly+ has the shortest fork travel. The frame is made of aluminium.
The starting price of €3,299 (4 800 Wh Gen 5) is roughly in line with the category median (€3,150). The top build, 8 Gen 5, costs €4,499. The fork line-up ranges from the SR Suntour XCM34 to the FOX AWL Rail HD. It is powered by Bosch with a 800 Wh battery.
Setup notes for this spec
- Air fork (RockShox Recon Silver RL): the air valve is on top of the left leg under a cap. Change pressure in small steps (about 5 psi (0.34 bar)) and cycle the fork a few times afterwards so the air chambers can equalise.
- 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.
- e-MTB: because of the extra weight, start with slightly more tyre pressure – the surcharge is already built into the table below.
- Hardtail: without rear suspension, rear tyre pressure largely decides comfort and traction – it is worth testing in 0.1 bar (1.5 psi) steps.
Target SAG for the Trek Powerfly+
The table converts the recommended SAG percentages into millimetres, so you can check them with the O-ring directly on the stanchion. Adjust the air pressure until the value is right. If Trek specifies its own target SAG for your model, that takes priority.
120 mm fork (4 800 Wh Gen 5, 8 Gen 5)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 20 mm |
| Trail | 20 % = 24 mm |
| Enduro / rough | 22 % = 26 mm |
| Bike park | 20 % = 24 mm |
100 mm fork (6 Gen 5)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 17 mm |
| Trail | 20 % = 20 mm |
| Enduro / rough | 22 % = 22 mm |
| Bike park | 20 % = 20 mm |
How to measure SAG is explained in our guide SAG setup.
Tyre pressure starting values
Basis: 2.60″ tyre width, tubeless, trail casing, including the e-MTB surcharge. If you run tubes, add about 0.2 bar (2.9 psi); with an insert, about 0.1 bar (1.5 psi) less is enough.
| 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
You will find a suitable starting pressure on the sticker on the fork stanchion or in the suspension manufacturers’ setup charts. Our calculator gives you a starting value including rebound for your weight and riding style. What matters afterwards is the measured SAG from the table above.