Trek Fuel+ LX: suspension setup & specs
The Trek Fuel+ LX is an e-enduro bike with 170 mm of fork travel and 160 mm at the rear. It is powered by TQ HPR60. This page lists the 2 current builds with fork, shock and shock size and gives matching starting values for SAG and tyre pressure.
Calculate the setup for your Trek Fuel+ LX →
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 |
|---|---|---|---|---|---|---|---|---|
| 9.8 Eagle 90 Gen 2 | FOX 38 Factory (170 mm) | FOX DHX2 (coil) | – | 160 mm | TQ HPR60 580 Wh | – | €8,699 | Setup → |
| 9.9 X0 AXS Gen 2 | RockShox ZEB Ultimate (170 mm) | RockShox Vivid Ultimate | – | 160 mm | TQ HPR60 580 Wh | – | €11,699 | Setup → |
How it compares
On travel, the Trek Fuel+ LX is right where the “e-enduro bike” category usually is: 170 mm up front against a median of 170 mm from 56 bikes. The fork has 10 mm more travel than the rear end with 160 mm – a common layout that takes load off the front on steep terrain. No other Trek model among its e-mountain bikes has more travel up front. Trek builds the frame from carbon.
With a starting price of €8,699 (9.8 Eagle 90 Gen 2), the Trek Fuel+ LX is above the category median (€6,900). The top build, 9.9 X0 AXS Gen 2, costs €11,699. Depending on the build, fork and shock come from FOX and RockShox. In total, 2 different forks are used, from the FOX 38 Factory to the RockShox ZEB Ultimate. The 9.8 Eagle 90 Gen 2 build uses a coil shock (FOX DHX2 (coil)), so SAG is set with the spring rate rather than air pressure. Drive comes from TQ HPR60, paired with 580 Wh of battery capacity.
Setup notes for this spec
- Air fork (FOX 38 Factory): 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: on FOX and RockShox suspension the rebound adjuster is red. Always count clicks from fully closed (clockwise to the stop) so you can return to any setting.
- Coil shock (FOX DHX2 (coil)): SAG is determined by the spring rate. Only add enough preload to stop the spring from rattling.
- Air shock (RockShox Vivid Ultimate): measure SAG in your riding position, ideally with a helper holding the bike. Cycle the shock a few times after every pressure change.
- 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+ LX
SAG is the share of travel your weight already uses in the riding position. The table gives it straight in millimetres – read the O-ring on the stanchion and on the shock shaft and adjust the air pressure until it matches. Any figures from Trek take priority.
170 mm fork (all builds)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 29 mm |
| Trail | 20 % = 34 mm |
| Enduro / rough | 22 % = 37 mm |
| Bike park | 20 % = 34 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.