Trek Fuel+ MX: suspension setup & specs
The Trek Fuel+ MX is an e-MTB for trail and touring with 160–170 mm of fork travel and 150 mm at the rear. It is powered by TQ HPR60. Here you will find all 4 current builds with fork, shock and shock size, plus matching SAG and tyre pressure starting values.
Calculate the setup for your Trek Fuel+ MX →
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" / 27.5" (Mullet).
| Build | Fork | Shock | Shock size | Rear travel | Motor | Weight | RRP | Calculator |
|---|---|---|---|---|---|---|---|---|
| 9.8 Eagle 90 Gen 2 | RockShox ZEB Ultimate (170 mm) | RockShox Vivid Ultimate | – | 150 mm | TQ HPR60 580 Wh | – | €8,499 | Setup → |
| 9.8 XT Gen 2 | FOX 36 Factory (160 mm) | FOX Float X Factory | – | 150 mm | TQ HPR60 580 Wh | – | €8,499 | Setup → |
| 9.8 XT Di2 Gen 2 | FOX 36 Factory (160 mm) | FOX Float X Factory | – | 150 mm | TQ HPR60 580 Wh | – | €8,999 | Setup → |
| 9.9 X0 AXS Gen 2 | RockShox ZEB Ultimate (170 mm) | RockShox Vivid Ultimate | – | 150 mm | TQ HPR60 580 Wh | – | €11,499 | Setup → |
How it compares
With 160–170 mm at the fork, the Trek Fuel+ MX sits above average: across the 101 bikes in the “e-MTB for trail and touring” category in our database, the median is 150 mm. On travel, it slots in between the Trek Rail+ and the Trek Fuel+ LX in the Trek range. Trek builds the frame from carbon.
With a starting price of €8,499 (9.8 Eagle 90 Gen 2), the Trek Fuel+ MX is above the category median (€5,500). The top build, 9.9 X0 AXS Gen 2, costs €11,499. Depending on the build, fork and shock come from FOX and RockShox. The fork line-up ranges from the RockShox ZEB Ultimate to the FOX 36 Factory. Drive comes from TQ HPR60, paired with 580 Wh of battery capacity.
Setup notes for this spec
- Fork (RockShox ZEB Ultimate): 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 Vivid Ultimate): 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: the extra weight mainly affects tyre pressure, which is why the table below already includes a surcharge. SAG is measured just as on a bike without a motor.
Target SAG for the Trek Fuel+ MX
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.
170 mm fork (9.8 Eagle 90 Gen 2, 9.9 X0 AXS Gen 2)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 29 mm |
| Trail | 20 % = 34 mm |
| Enduro / rough | 22 % = 37 mm |
| Bike park | 20 % = 34 mm |
160 mm fork (9.8 XT Gen 2, 9.8 XT Di2 Gen 2)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 27 mm |
| Trail | 20 % = 32 mm |
| Enduro / rough | 22 % = 35 mm |
| Bike park | 20 % = 32 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 and shock
The sticker on the fork (or on the shock) and the manufacturers’ setup charts give you a first pressure. Our calculator is more precise and suggests rebound too – always check the result via SAG.