Biktrix

Juggernaut Ultra Duo 4

Price $3,499
Motor (Nominal) 1,000 W
Range 95 mi
Inventory Check Inventory
Juggernaut Ultra Duo 4
Performance Review
8.5/10 ebikes.com score
Highly Recommended
Excellent performance with minor tradeoffs.
Editorial Score
Data-driven rating breakdown
8
/100
Power
9/10
Range
9/10
Comfort
7/10
Build Quality
9/10
Value
8/10
Starting at
--
Price
Nominal power
1,000 W
Motor (Nominal)
Capacity
910 Wh
Battery
Estimated range
95 mi
Range
Max speed
20 mph
Top Speed
Max load
380 lbs
Payload Capacity
Folds
No
Foldable

Editorial Insights

Reasons to Buy

  • + Exceptional power and torque from the Bafang Ultra M620 mid-drive motor.
  • + Outstanding range with a large 910Wh standard battery and extensive upgrade options.

Reasons to Avoid

  • - Potential for a significantly higher price with desirable component upgrades.
  • - Bike weight not specified, likely heavy given its robust build and powerful components.
Expert Verdict

In-Depth Analysis

Biktrix Juggernaut Ultra Duo 4 Step-Over: A True Trail Blazer

The Biktrix Juggernaut Ultra Duo 4 Step-Over is an e-bike designed for riders who demand uncompromising power, versatility, and long-lasting performance. At its heart lies the formidable 1000W Bafang Ultra M620 mid-drive motor, delivering an astonishing 160Nm of torque. This isn't just a motor; it's a statement, ensuring effortless navigation across any terrain, from steep hills to rugged trails. Coupled with a substantial 52V 17.5Ah (910Wh) internal battery, riders can expect an impressive standard range of up to 95 miles, pushing the boundaries of what's possible on a single charge. With a starting price of $3499, this bike positions itself as a serious contender for adventure seekers and daily commuters alike, boasting a robust 380lb load capacity.

Performance is where the Juggernaut Ultra Duo 4 truly shines. The integration of both cadence and torque sensors provides a natural and powerful pedal assist experience, while the on-demand throttle offers the flexibility of a leisurely, pedal-optional ride. Biktrix has engineered this bike with a 'no limit' off-road capability, allowing riders on private land to unleash its full potential beyond the standard 20mph street-legal limit. Beyond its raw power, the bike offers an extensive array of customization and upgrade options, allowing riders to tailor their experience. From enhanced drivetrains like Shimano CUES 11-speed, to inverted Wren suspension forks, quad-piston Magura MT5e hydraulic brakes, and advanced ratcheting rear hubs, every component can be optimized for specific riding styles and demands.

Biktrix emphasizes quality with a 25+ point control checklist and a 2-year standard warranty, reflecting confidence in their build. The thoughtful design, including an internal battery for a cleaner look and a wide palette of color options, adds to its appeal. While the base configuration offers immense value, the ability to upgrade ensures the Juggernaut Ultra Duo 4 can evolve with a rider's needs, transforming it into a personalized, high-performance machine ready for anything. For those seeking a powerful, long-range, and highly customizable e-bike capable of conquering diverse landscapes, the Juggernaut Ultra Duo 4 Step-Over stands out as an exceptional choice.

Specs

Key specifications for Juggernaut Ultra Duo 4, organized for quick scanning.

Pricing
Price --
Motor
Motor (Nominal) 1,000 W
Motor (Peak) --
Battery
Battery 910 Wh
Battery (Ah) 17.5 Ah
Performance
Range 95 mi
Top Speed 20 mph
Utility
Weight --
Payload Capacity 380 lbs
Foldable No

Real-World Range Estimator

43.3 mi
Based on 910 Wh battery capacity
Motor Type
Terrain
How is this calculated?

How We Score eBikes

At eBikes.com, we believe in complete transparency. Our Editorial Scores are not influenced by sponsorships or brand partnerships. They are calculated using a strict, data-driven logic gate based on manufacturer specifications:

⚡ Power Graded strictly by Motor Wattage. A baseline 250W earns an average score, with higher continuous outputs scaling linearly to the maximum score.
🗺️ Range Graded by Battery Capacity (Watt-hours). A standard 300Wh battery serves as the baseline, rewarding bikes that offer extended range capacities.
🛋️ Comfort Calculated by suspension type (Full, Front, or Rigid) and frame geometry (Step-Thru vs. Step-Over) to determine overall ride smoothness.
🛠️ Build Quality Assessed via component tiers. Bikes receive premium marks for Hydraulic Brakes, UL 2849 safety certifications, and premium price-tier construction.
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