Bulls Copperhead EVO AM: suspension setup & specs
The Bulls Copperhead EVO AM is an e-MTB for trail and touring with 150–160 mm of fork travel and 150 mm at the rear. It is powered by Bosch Performance Line CX GEN5 (Smart System) 25/85 Nm. Below you will find all 2 current builds with fork, shock and shock size, plus SAG values in millimetres and a tyre pressure table.
Calculate the setup for your Bulls Copperhead EVO AM →
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 |
|---|---|---|---|---|---|---|---|---|
| 3 | RockShox Lyrik Select RC (150 mm) | RockShox Deluxe Select+ RL | – | 150 mm | Bosch Performance Line CX GEN5 (Smart System) 25/85 Nm | 25.9 kg | €5,999 | Setup → |
| 4 | RockShox Lyrik Ultimate (160 mm) | RockShox Deluxe Select+ RL | – | 150 mm | Bosch Performance Line CX GEN5 (Smart System) 25/85 Nm | 25.9 kg | €6,999 | Setup → |
How it compares
On travel, the Bulls Copperhead EVO AM is right where the “e-MTB for trail and touring” category usually is: 150–160 mm up front against a median of 150 mm from 101 bikes. On travel, it slots in between the Bulls Sonic AM and the Bulls Vuca EVO AM in the Bulls range. The frame is available in carbon or aluminium.
At a minimum of 25.9 kg (3 build), the Bulls Copperhead EVO AM is heavier than its category median of 23.4 kg – 2.5 kg more. The starting price of €5,999 (3) is roughly in line with the category median (€5,500). For the 4 build, Bulls asks €6,999. Bulls uses RockShox suspension throughout. In total, 2 different forks are used, from the RockShox Lyrik Select RC to the RockShox Lyrik Ultimate. It is powered by Bosch Performance Line CX GEN5 (Smart System) 25/85 Nm. Worth knowing for heavier riders: the maximum system weight is 130 kg – after about 26 kg of bike, that leaves around 104 kg including kit.
Setup notes for this spec
- Fork (RockShox Lyrik Select RC): 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 RockShox 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 (RockShox Deluxe Select+ RL): 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 Bulls Copperhead EVO AM
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 Bulls take priority.
150 mm fork (3)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 26 mm |
| Trail | 20 % = 30 mm |
| Enduro / rough | 22 % = 33 mm |
| Bike park | 20 % = 30 mm |
160 mm fork (4)
| 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
The values apply to 2.40″ wide tubeless tyres with a trail casing, including the e-MTB surcharge. With an inner tube add about 0.2 bar (2.9 psi), with an insert take off about 0.1 bar (1.5 psi). Stock tyres: SCHWALBE Magic Mary Performance.
| Ready-to-ride weight | Front | Rear |
|---|---|---|
| 60 kg | 1.48 bar (21 psi) | 1.68 bar (24 psi) |
| 70 kg | 1.60 bar (23 psi) | 1.80 bar (26 psi) |
| 80 kg | 1.72 bar (25 psi) | 1.92 bar (28 psi) |
| 90 kg | 1.84 bar (27 psi) | 2.04 bar (30 psi) |
| 100 kg | 1.96 bar (28 psi) | 2.16 bar (31 psi) |
| 110 kg | 2.08 bar (30 psi) | 2.28 bar (33 psi) |
| 120 kg | 2.20 bar (32 psi) | 2.40 bar (35 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.