Quick Answer: The Biktrix Juggernaut Ultra Duo 4 ST ($2,982) is the best Biktrix electric bike for most riders — a Bafang mid-drive motor with 160Nm of torque, a 910Wh battery plus a free 884Wh range extender, and a claimed 45-mile range on the standard battery alone. Riders on a budget should look at the Swift CVT Lite ($1,899), a 250W mid-drive commuter. Fat-tire riders chasing maximum range should consider the Juggernaut Hub Duo Step-Thru 2 ($2,299), which claims up to 135 miles with its largest range-extender battery installed.
Biktrix started as a 2014 Kickstarter project out of Saskatoon, Saskatchewan, and has since grown into one of the most customizable direct-to-consumer e-bike catalogs around — commuter, fat-tire, full-suspension, and even carbon-frame models, most built around Bafang mid-drive or hub motors with optional dual-battery range extenders. We ranked the current lineup on motor output, real-world range, and — where Electric Bike Review has tested a model — how well the bike’s own claims hold up under independent scrutiny.
Biktrix in 2026, by the numbers
- 160Nm of torque — the Juggernaut Ultra Duo 4 ST’s peak torque figure, per Electric Bike Review’s independent test, among the highest of any bike in Biktrix’s current lineup.
- 1,500W peak power — the Ultra Duo 4’s motor output at full assist, delivered through a Bafang mid-drive with gradual ramp-up tuned to protect the drivetrain — though EBR’s testers still logged chain slippage under full-power acceleration.
- 94.21 lbs — the Ultra Duo 4’s total tested weight, per Electric Bike Review, flagged in the same review as notably heavy for frequent lifting or transport.
- $1,899 — the starting price of the Swift CVT Lite, Biktrix’s cheapest current model, built around a 250W Bafang M420 mid-drive motor and a 504Wh battery.
- Up to 135 miles claimed — the Juggernaut Hub Duo Step-Thru 2’s advertised range with its largest range-extender battery installed, the longest figure in Biktrix’s current catalog.
Best Biktrix electric bikes at a glance
| Model | Best for | Motor | Battery / range | Price |
|---|---|---|---|---|
| Juggernaut Ultra Duo 4 ST | Best overall | Bafang mid-drive, 1,000W/1,500W peak, 160Nm | 910Wh + 884Wh extender / 45 mi claimed | $2,982 (was $3,499) |
| Swift CVT Lite | Best value/commuter | 250W Bafang M420 mid-drive | 504Wh / ~47 mi claimed | $1,899 |
| Juggernaut Hub Duo Step-Thru 2 | Best fat-tire | 750W hub, 80Nm | 910Wh, up to 1,742Wh / 70-135 mi claimed | $2,299 (was $2,999) |
| Juggernaut FS ST MTB | Best full-suspension | 1,500W Bafang mid-drive | 1,300Wh / 100 mi max claimed | $4,199 (was $4,999) |
| Monte Capro Lite | Best premium/carbon | 500W Bafang M600 mid-drive, 120Nm | 840Wh / ~40 mi claimed | $4,299 |
Prices and specs are current 2026 listings from biktrix.com and Electric Bike Review's independent Ultra Duo 4 test — Biktrix runs frequent sale pricing, so check the live listing before buying.
1. Biktrix Juggernaut Ultra Duo 4 ST — Best Overall
Biktrix Juggernaut Ultra Duo 4 ST
- Bafang mid-drive motor rated 1,000W nominal (1,500W peak) with 160Nm of torque and a gradual power ramp-up tuned to protect the drivetrain.
- 910Wh standard battery (52V, 17.5Ah) plus a free 884Wh range-extender battery, claimed for 45 miles on the standard battery alone.
- Electric Bike Review clocked 38-40 mph in unrestricted mode, with 380 lb max payload and 27.5" x 3" tires.
- Honest tradeoff from independent testing: at 94.21 lbs it's heavy to lift, and EBR noted chain slippage under full-power acceleration — the drivetrain working at its limit against the motor's torque.
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The Ultra Duo 4 ST is Biktrix’s clearest power play — a torque figure that rivals bikes costing twice as much, backed by a dual-battery range extender rather than a single oversized pack. Electric Bike Review called the power delivery “like nothing I’ve experienced on any other e-bike,” but their test also caught a real limitation: the drivetrain isn’t quite matched to the motor’s full output. If raw torque and dual-battery range are what you’re after, compare it against other high-output options in our best long range electric bike guide.
2. Biktrix Swift CVT Lite — Best Value & Commuter
Biktrix Swift CVT Lite
- 250W Bafang M420 mid-drive motor — the smallest and smoothest in Biktrix's lineup, built for pavement commuting rather than off-road torque.
- 36V/14Ah (504Wh) battery, claimed for approximately 47 miles (75km) on a single charge.
- Manual-shifting models start at $1,899; automatic CVT shifting variants run $2,399.
The Swift CVT Lite skips the Juggernaut line’s fat tires and high-torque motors in favor of a lighter, cheaper commuter platform — the lowest-priced way into the Biktrix lineup. It’s the pick if you want a mid-drive motor’s smooth pedal feel without paying for power you won’t use in city riding. See how it stacks up against other budget-focused picks in our best commuter electric bike guide.
3. Biktrix Juggernaut Hub Duo Step-Thru 2 — Best Fat-Tire
Biktrix Juggernaut Hub Duo Step-Thru 2
- 750W geared rear hub motor with 80Nm of torque, RST Guide suspension fork (75mm travel, preload-adjustable and lockout), and Tektro hydraulic disc brakes.
- 910Wh internal battery (52V, 17.5Ah), expandable to 1,742Wh total with the range-extender option — claimed range runs 70 miles internal-only up to 85-135 miles extended.
- 330 lb weight capacity; frame options include step-over, step-thru, and small step-thru, with 24" x 4" or 26" x 4" / 27.5" x 2.8" tire choices depending on frame size.
The Hub Duo Step-Thru 2 trades the Ultra Duo 4’s mid-drive torque for a simpler, cheaper hub-motor setup — but matches it on range flexibility thanks to the same dual-battery extender approach. At $700 less than the Ultra Duo 4, it’s the fat-tire pick for riders who want long range without mid-drive pricing. Compare it against other fat-tire options in our best fat tire electric bike guide.
4. Biktrix Juggernaut FS ST MTB — Best Full-Suspension
Biktrix Juggernaut FS ST MTB
- 1,500W Bafang mid-drive motor paired with a 1,300Wh battery (52V, 25Ah) — the largest single-pack capacity in Biktrix's lineup.
- Claimed up to 100 miles of max range with the dual-battery configuration.
- Full-suspension frame built for off-road mountain-bike trail riding rather than commuting.
The Juggernaut FS ST MTB is Biktrix’s dedicated trail bike — full suspension and the same mid-drive power class as the Ultra Duo 4, but tuned for singletrack rather than long-distance commuting. It’s priced well above the rest of the lineup, but undercuts many full-suspension eMTBs from bigger brands. See how it compares in our best full suspension electric bike guide.
5. Biktrix Monte Capro Lite — Best Premium & Carbon
Biktrix Monte Capro Lite
- Carbon fiber frame — the only carbon model in Biktrix's current lineup — weighing approximately 52.5-53.8 lbs without battery, depending on frame size.
- 500W Bafang M600 mid-drive motor with 120Nm of torque and an RST Titan Air suspension fork.
- 840Wh battery (48V, 17.5Ah), claimed for approximately 40 miles per charge; limited to 20 mph in street-legal mode, unlimited when programmed for off-road use.
The Monte Capro Lite is Biktrix’s lightest and most expensive model by a wide margin — a genuine carbon frame at roughly half the weight of the fat-tire Juggernaut lineup, aimed at riders who value handling over maximum torque or range. It’s the pick if a lighter, more traditional-feeling ride matters more than the biggest battery in the catalog. Compare carbon and other lightweight builds in our best lightweight electric bike guide.
How to choose a Biktrix electric bike
- Match motor type to your terrain. The mid-drive Ultra Duo 4, FS ST MTB, and Monte Capro Lite put power through the pedals for better hill-climbing and off-road control; the hub-motor Hub Duo Step-Thru 2 is simpler and cheaper but less capable on steep or loose terrain.
- Decide how much range you actually need. The Ultra Duo 4 and Hub Duo Step-Thru 2 both offer range-extender batteries that roughly double capacity — useful for long rides, unnecessary weight and cost for daily commuting.
- Weigh the Ultra Duo 4’s real-world tradeoffs. Electric Bike Review’s independent test found genuinely strong power delivery alongside chain slippage under full-power acceleration and a 94.21 lb curb weight — worth knowing before you buy the most powerful model in the lineup.
- Check current sale pricing before you commit. Nearly every Biktrix model listed here is currently discounted from its regular price — confirm the live listing rather than trusting a cached figure.
- Carbon costs a real premium. The Monte Capro Lite is the only carbon-frame option and costs more than double the Swift CVT Lite for a lighter, smaller-battery build — pick it for handling, not for spec-per-dollar.
The bottom line
The Biktrix Juggernaut Ultra Duo 4 ST ($2,982) is the best Biktrix electric bike for most riders who want maximum torque and dual-battery range, though Electric Bike Review’s independent test flags real tradeoffs worth knowing first. Budget-focused commuters should start with the Swift CVT Lite ($1,899), fat-tire riders chasing range should look at the Juggernaut Hub Duo Step-Thru 2 ($2,299), trail riders should consider the Juggernaut FS ST MTB ($4,199), and the Monte Capro Lite ($4,299) is the pick for a genuinely lightweight carbon build. See how Biktrix compares to other direct-to-consumer brands in our best electric bike brands guide, or start from the top with our flagship best electric bike rankings.