Flyer Uproc SL:X: suspension setup & specs
The Flyer Uproc SL:X is an e-MTB for trail and touring with 130 mm of fork travel and 130 mm at the rear. It is powered by Bosch Performance Line SX. Here you will find all 3 current builds with fork, shock and shock size, plus matching SAG and tyre pressure starting values.
Calculate the setup for your Flyer Uproc SL:X →
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 |
|---|---|---|---|---|---|---|---|---|
| G1 4.10 | X-Fusion E-Slide 34 RC (130 mm) | X-Fusion O2 Pro RLX | 210x47.5 | 130 mm | Bosch Performance Line SX 400 Wh | 19.0 kg | €5,799 | Setup → |
| G1 6.50 | FOX 34 Float Rhythm (130 mm) | FOX Float Performance | 210x47.5 | 130 mm | Bosch Performance Line SX 400 Wh | 19.0 kg | €6,999 | Setup → |
| G1 8.70 | FOX 34 Float Performance (130 mm) | FOX Float Performance | 210x47.5 | 130 mm | Bosch Performance Line SX | 19.0 kg | €7,499 | Setup → |
How it compares
With 130 mm of fork travel, the Flyer Uproc SL:X is on the shorter side; the median of the 101 comparable bikes in the “e-MTB for trail and touring” category is 150 mm. Travel is the same front and rear at 130 mm each. On travel, it slots in between the Flyer Uproc2 and the Flyer Uproc X in the Flyer range. The frame is made of carbon.
The Flyer Uproc SL:X does well on weight: 19.0 kg for the G1 4.10 build is 4.4 kg below the median of comparable bikes (23.4 kg). The starting price of €5,799 (G1 4.10) is roughly in line with the category median (€5,500). For the G1 8.70 build, Flyer asks €7,499. For suspension, Flyer combines components from FOX and X-Fusion. The fork line-up ranges from the X-Fusion E-Slide 34 RC to the FOX 34 Float Performance. Drive comes from Bosch Performance Line SX, paired with 400 Wh of battery capacity. Flyer specifies a maximum system weight of 130 kg. Subtracting roughly 19 kg for the bike leaves about 111 kg for rider, clothing, backpack and luggage.
Setup notes for this spec
- Air fork (FOX 34 Float Rhythm): 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 suspension the rebound adjuster is red. Always count clicks from fully closed (clockwise to the stop) so you can return to any setting.
- Air shock (X-Fusion O2 Pro RLX): 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: because of the extra weight, start with slightly more tyre pressure – the surcharge is already built into the table below.
Target SAG for the Flyer Uproc SL:X
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 Flyer take priority.
130 mm fork, 47.5 mm shock stroke (all builds)
| Riding style | Fork SAG | Shock SAG |
|---|---|---|
| XC / touring | 17 % = 22 mm | 24 % = 11.4 mm on the shock shaft |
| Trail | 20 % = 26 mm | 28 % = 13.3 mm on the shock shaft |
| Enduro / rough | 22 % = 29 mm | 30 % = 14.2 mm on the shock shaft |
| Bike park | 20 % = 26 mm | 27 % = 12.8 mm on the shock shaft |
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. Stock tyres: SCHWALBE Wicked Will Super Ground 29 x 2,4.
| 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.