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The "Copperhead EVO 3 27.5" model from Bulls, released in 2023, is a high-quality e-mountain bike which, at a price of 4,199 EUR, offers a comprehensive range of features and state-of-the-art technology. The frame is made from 6061 aluminium, which has been hydroformed, and features internal cable routing and a thru-axle. The maximum load capacity is 130 kg, ensuring high durability.
The braking system utilises Shimano’s tried-and-tested technology. At the front, SHIMANO BR-MT420 brakes are fitted with a 203 mm Centre Lock brake disc, whilst at the rear, SHIMANO BR-MT410 brakes are fitted with a 180 mm Centre Lock brake disc. The brake levers are the SHIMANO BL-MT401 2-finger models, which ensure precise and reliable braking performance.
The Copperhead EVO 3 27.5’s gear system is supported by the SHIMANO Deore RD-M6100 shadow+ rear derailleur and the SHIMANO Deore SL-M6100 rapidfire+ shift levers. This combination enables precise gear-changing performance across a total of 12 gears. The fork is a BULLS Lytro 34 Air LOR with 120 mm of travel, ensuring a comfortable ride on uneven terrain.
For lighting, the bike is fitted with MonkeyLink Connect interfaces, although the actual lights are not included in the scope of delivery. The pedals are BULLS MTB pedals, which provide good grip and stability. The crankset is from FSA and measures 165 mm. The cassette is a SHIMANO Deore 12-speed with a gear ratio of 10-51T.
The drivetrain is based on the GATES® CDX belt drive, which is renowned for its durability and low-maintenance nature. The handlebars are BULLS Sport-SL double-butted riser bars, combined with Comfort Sport grips and an MTB-i stem that is CCS Slot Mount-ready. The headset is an FSA ACR ZS model.
The rims are RYDE Disc 30 and tubeless-ready, ensuring improved puncture resistance and reduced weight. The tyres are SCHWALBE Wicked Will Perf. folding, sized 65-584. The hubs are by SHIMANO: the HB-MT400-B Centre Lock model at the front and the FH-MT410-B Centre Lock model at the rear.
The saddle is a SELLE ROYAL Vivo Ergo, mounted on a BULLS aluminium seatpost. At the heart of the e-bike is the Bosch Performance Line CX (Smart System) motor with a rated speed of 25 km/h and a torque of 85 Nm. The battery is a Bosch PowerTube (Smart System) with a capacity of 500 Wh. The display can be combined with various options such as the Mini-Remote, Kiox 300, SmartphoneGrip, Intuvia 100 or a smartphone. A Bosch standard 4A charger is used for charging.
Overall, the Copperhead EVO 3 27.5 from Bulls offers an impressive combination of performance, reliability and advanced technology, making it an attractive choice for discerning e-mountain bike riders.
| Rear brakes | SHIMANO BR-MT410, 2-piston |
| Brakes | SHIMANO BR-MT420 |
| Rear brake disc | 180 mm / Centre Lock |
| Brake levers | BL-MT401 2-finger |
| Frame | 6061 aluminium, hydroforming, internal cable routing, thru-axle |
| Drivetrain | SHIMANO Deore RD-M6100 shadow+ |
| Shift levers | SHIMANO Deore SL-M6100, rapidfire+ |
| Number of gears | 12 |
| Fork | BULLS Lytro 34 Air LOR, Boost |
| Fork travel (mm) | 120 |
| Crankset | FSA 165 mm |
| Sprocket | SHIMANO Deore 12-speed, 10–51T |
| Drive | GATES ® CDX |
| Headset | FSA ACR ZS |
| Handlebar | BULLS Sport-SL double butted riser bar |
| Grips | Comfort Sport |
| Stem | MTB-i, CCS slot mount compatible |
| Saddle | SELLE ROYAL Vivo Ergo |
| Seatpost | BULLS Aluminium |
| Rims | RYDE Disc 30, tubeless ready |
| Tires | SCHWALBE Wicked Will Perf. folding 65-584 |
| Rear hub | SHIMANO FH-MT410-B Centre Lock |
| Pedals | BULLS MTB pedals |
| Front light | MonkeyLink Connect (lighting not included in the scope of delivery) |
| Rear light | MonkeyLink Connect (lighting not included in the scope of delivery) |
| Motor manufacturer / model | Bosch Performance Line CX (Smart System) 25/85Nm |
| Display | Can be used with: Mini Remote, Kiox 300, SmartphoneGrip, Intuvia 100 or a smartphone |
| Battery | Bosch PowerTube (Smart System) 500 |
| Battery capacity (Wh) | 500 |
| Charger | Bosch Standard Charger 4A |