CUBE Reaction Hybrid: suspension setup & specs
The CUBE Reaction Hybrid is an e-hardtail with 120 mm of fork travel. It is powered by Bosch Performance Line CX. Below you will find all 4 current builds with fork, plus SAG values in millimetres and a tyre pressure table.
Calculate the setup for your CUBE Reaction Hybrid →
All builds
Fork, motor, weight and price according to the manufacturer. Wheel size: 29 / 29 (S: 27.5).
| Build | Fork | Motor | Weight | RRP | Calculator |
|---|---|---|---|---|---|
| Pro 800 FE | RockShox Recon Silver RL Air (120 mm) | Bosch Performance Line CX 800 Wh | 26.8 kg | – | Setup → |
| Race 800 FE (with German road-legal StVZO kit) | FOX 34 Float AWL RAIL (120 mm) | Bosch Performance Line CX 800 Wh | 24.4 kg | – | Setup → |
| SLT 800 | FOX 36 Float AWL RAIL (120 mm) | Bosch Performance Line CX 800 Wh | 24.8 kg | – | Setup → |
| SLX 800 FE (with German road-legal StVZO kit) | FOX 34 Float AWL (120 mm) | Bosch Performance Line CX 800 Wh | 24.4 kg | – | Setup → |
How it compares
On travel, the CUBE Reaction Hybrid is right where the “e-hardtail” category usually is: 120 mm up front against a median of 120 mm from 27 bikes. Among CUBE’s e-mountain bikes, the CUBE Reaction Hybrid has the shortest fork travel. The frame is made of aluminium.
24.4 kg for the Race 800 build puts the CUBE Reaction Hybrid mid-pack on weight (median: 24.4 kg). Within the range, weight varies by 2.4 kg. The fork line-up ranges from the RockShox Recon Silver RL Air to the FOX 34 Float AWL. Drive comes from Bosch Performance Line CX, paired with 800 Wh of battery capacity.
Setup notes for this spec
- Fork (RockShox Recon Silver RL Air): 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: 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.
- e-MTB: because of the extra weight, start with slightly more tyre pressure – the surcharge is already built into the table below.
- Hardtail: only the fork needs setting up. With no rear suspension, rear tyre pressure is the key adjustment for comfort and grip.
Target SAG for the CUBE Reaction Hybrid
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 CUBE specifies its own target SAG for your model, that takes priority.
120 mm fork (all builds)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 20 mm |
| Trail | 20 % = 24 mm |
| Enduro / rough | 22 % = 26 mm |
| Bike park | 20 % = 24 mm |
How to measure SAG is explained in our guide SAG setup.
Tyre pressure starting values
For 2.60″ wide tyres, tubeless with a trail casing, including the e-MTB surcharge. With an inner tube about 0.2 bar (2.9 psi) more, with an insert about 0.1 bar (1.5 psi) less. Stock tyres: Schwalbe Smart Sam 2.6; Schwalbe Smart Sam Active 2.6; Schwalbe Smart Sam Performance 2.6.
| 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.