The Juggernaut Ultra Duo 4 Step-Over is Biktrix's high-capacity hardtail mid-drive e-bike, purpose-built for dual-battery operation with the Bafang Ultra M620 (1000W, 160Nm). The 52V 17.5Ah 910Wh primary battery is complemented by optional range extenders for up to 95 miles of range. Available with 26x4 fat or 27.5x3 MTB wheels, supports a 380lb payload, and features on-demand throttle.
In brief: 1000W Fat Tire. 52V 17.5Ah battery. Class 2 (Throttle 32 km/h). Up to 32 km/h. Aluminum frame.
Specs verified Jul 12, 2026
Where to Find
Prices tracked across 1 sellerPrice History
Current best price $3,499.00. Over the past 90 days: low $3,499.00, high $3,499.00, average $3,499.00 — about average.
- Biktrix
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
Biktrix(42 records) | |||||||||
| Jul 12, 202604:44 PM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | No | active |
| Jul 9, 202603:20 PM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jul 8, 202609:25 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jul 7, 202603:26 PM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jul 5, 202603:26 PM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jul 3, 202602:20 PM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jul 1, 202603:24 PM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jul 1, 202609:20 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 29, 202604:18 PM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 27, 202603:16 PM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 25, 202609:24 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 23, 202609:42 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 21, 202609:21 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 19, 202610:16 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 17, 202609:27 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 17, 202609:18 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 15, 202609:27 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 13, 202609:27 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 12, 202609:23 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 3, 202610:47 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 3, 202609:08 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Jun 2, 202609:09 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 31, 202609:08 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 29, 202609:07 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 27, 202609:55 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 27, 202609:06 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 25, 202612:41 PM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 23, 202609:01 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 21, 202609:01 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 20, 202611:44 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 19, 202609:01 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 19, 202605:11 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 18, 202609:01 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 16, 202609:01 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 14, 202609:01 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 13, 202611:13 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 12, 202609:01 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| May 6, 202610:27 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Apr 29, 202610:32 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Apr 22, 202610:30 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Apr 22, 202609:00 AM | $3,499.00 | — | $3,499.00 | $0.00 | — | — | — | Yes | active |
| Apr 20, 202609:00 AM | $3,499.00 | — | $3,499.00 | Initial | — | — | — | Yes | active |
Reviews
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Specifications
Classification
- E-Bike Class
- Class 2 (Throttle 32 km/h)
- Bike Type
- Fat Tire
Motor
- Motor Position
- Mid-Drive
- Wattage
- 1000W
- Peak Wattage
- 1000W
- Torque
- 160.00 Nm
- Top Assist Speed
- 32 km/h
Battery
- Voltage
- 52.0V
- Capacity
- 17.5Ah
- Energy
- 910Wh
- Chemistry
- Li-ion
- Estimated Range
- 96 km – 153 km
- Removable
- Yes
Frame & Build
- Frame Material
- Aluminum
- Frame Style
- High Step
- Wheel Size
- 26" x 4" (Fat)
- Folding
- No
Drivetrain & Brakes
- Gears
- 11-speed
- Drivetrain
- Derailleur
- PAS Levels
- 5
- PAS Sensor
- Cadence + Torque
- Throttle
- Yes
- Brakes
- Hydraulic Disc
Features
- Max Payload
- 172 kg
- Suspension
- Front Only (Hardtail)
- Integrated Lights
- No
- UL Certified
- No








