4EVER Exstream TEAM 820
Mountain e-MTBs with the power for real challenges. Great for tough terrain and long day trips. It features a BROSE Drive unit S-mag motor, 820 Wh battery, 12-speed derailleur and 29" wheels. Range up to 200 km. Ram where others lose their breath, the Exstream TEAM 820 scores.
Brose S-Mag
90 Nm
820 Wh
12 speeds
29"
120 mm
TheShimano Deore XT M8100 is a 12-speed MTB groupset that excels in precision, durability and smooth operation.
- RapidFire Plus technology
- 2-Way Release
- I-SPEC EV compatibility
- Shadow RD+ technology
- 12-speed Hyperglide+
- Wide gear range
- Lightweight Beam Spider construction
RockShox Judy Gold RL is a high quality suspension fork designed for 29" mountain bikes. With 120mm of travel, it's ideal for trail, XC and all-mountain riding, where it provides a smooth ride and great damping. It features a Charger RL shock cartridge that provides smooth suspension and a wide range of adjustability.
- Boost 15x110 mmaxle.
- Charger RLshock cartridge.
- RLO (Remote Lockout)
- Suspension: Solo Air
E-bike range calculator
The e-bike range is approximately
*Factors affecting total range include assist mode settings, technical condition of the e-bike, battery age, ambient temperature, headwind, and riding technique
4EVER Exstream TEAM 820 is the top model of the Czech brand, designed for demanding mountain trails and long expeditions. Thanks to the powerful Brose S-Mag mid-motor (90 Nm) and the integrated BMZ V10 battery with a capacity of 820 Wh, you not only get high performance, but also a range of up to 200 km (depending on the route profile and riding style).
Key benefits:
* Brose S-Mag motor (90 Nm) - extremely quiet, lightweight (2.9 kg) and offers natural assistance with fast response.
* BMZ V10 battery 820 Wh - fully integrated, reliable BMS, range up to 140-200 km
* ALU E7005 BOOST frame with integrated battery - solid, modern design, boost standard for rigidity
Components for demanding terrain
* RockShox Judy Gold 29 Boost fork, 120 mm RLO - powerful and adjustable for trail use
* 1×12 Shimano Deore XT drivetrain (10-51T cassette) - precise shifting with a wide range
* Shimano BR-M6100 hydraulic brakes (180/160 mm) - reliable braking performance in all weather conditions
* 29″ wheels with Schwalbe Smart Sam 2.25″ tyres - great stability and handling
Who is it for
The Exstream TEAM 820 is the ideal choice for sportive riders who don't want to limit their trail riding. The powerful engine can handle technical rides, while the quality suspension fork and wide gears offer agility and control in challenging conditions.
the 4EVER Exstream TEAM 820 combines performance, durability and practical features. It's perfect for challenging terrain and long day trips - exactly where others lose their breath.
Need help choosing the right e-bike? Use our e-bike selection guide or contact us directly.

Motor Brose Drive S-Mag
The powerful Brose Drive S-Mag motor is the right for sports e-bikers. A particularly sensitive response enables peak performance on demanding routes. Thanks to the innovative magnesium case, it weighs only 2.9 kg and offers maximum support of up to 410 percent.
Brose Drive S Mag naturally supports the rider in every driving situation and, thanks to a precise sensor system, responds well to the individual driving style. Huge torque up to 90 Nm and very precise power dosing.

Battery BMZ V10 820 Wh
Powerful battery for long range electric bikes. With a capacity of 820 Wh and a voltage of 36 V, it provides long range, high efficiency and reliability even on demanding routes. The integrated Battery Management System (BMS) protects the battery from overheating, overvoltage and deep discharge.
The compact design designed to be fully integrated into the frame of the e-bike provides protection and a sleek look. The 820 Wh (22.77 Ah) capacity provides a range of up to 200 km depending on riding style, terrain and level of assistance. It supports fast charging, with 80% of capacity achievable in just 2-3 hours with the appropriate charger. Uses high quality Li-ion cells that last up to 1000 charge cycles while maintaining high performance.

Brose Allround display
New Brose "Allround" display in a clear design. Very easy to read and with all the important features. Minimalist and efficient with 14 functions! The 1.5" display can be installed on the right or left, making it the perfect all-in-one style solution. Slight curvature prevents extreme reflection and is therefore easy to read in any weather.
Display type: TFT color display
Dimensions: 44 mm x 37 mm x 50 mm
Protection class: IPX7 (HMI) dustproof, splashproof
Weight with cable: 50 g

The Czech Republic's traditional manufacturer 4EVER offers off-road and trekking e-bikes using Bafang and Brose motors made in Germany. E-bikes from 4EVER are excellent machines with above-standard battery capacity and apealing design. GREATEBIKE.EU offers a complete range of 4EVER e-bikes and a branded repair shop.
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Parameters
General
Model year | 2025 |
Weight incl. battery | 23,4 kg |
Brand | 4EVER |
Frame size | Frame 19", Frame 17", Frame 15,5", Frame 21" |
Colour | Green, Grey |
Load capacity | 120 kg |
Motor
Engine manufacturer | Brose |
Engine type | Brose Drive Unit S-Mag, Brose S-Mag |
Torque | 90 Nm |
Centre engine | Yes |
Battery
Charger | BMZ 42 V / 4,5 A |
Battery capacity | 800 - 899 Wh |
Precise capacity | 820 Wh |
Suspension
Front fork | ROCK SHOX JUDY 29BOOST 15 120 RLO |
Components
Saddlebag | 4EX sand blasted |
Racks | Mach1 Cross-R 27 29" |
Front hub | SHIMANO HB-MT410 BOOST 15mm |
Rear hub | SHIMANO FH-MT410 BOOST 12mm |
Saddle | SELLE ITALIA X3 |
Handlebars | 4EX sand blasted 740 mm |
Extender | 4EX sand blasted |
Coats | SCHWALBE Smart Sam 29x2,35 |
Transmission
Sorting | SHIMANO SL-M6100 1x12SPD |
Cassette | Shimano CS-M6100 12spd 10-51spd |
Shifter | Shimano XT RD-M8100, 12-speed |
Number of gears | 1x12 |
Brakes
Rear brakes | Shimano BR-MT401, 160 mm |
Front brakes | Shimano BR-MT401, 180 mm |
Questions
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