Biktrix Juggernaut Ultra FS Pro 3 Cruise Review: A 160 Nm Full-Suspension Trail Climber for $3,186
It has the torque and suspension to haul you and your gear up rough climbs; the trade-off is a battery that won't reach as far as all that power hints.
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What the stars are rated against
The stars compare this bike with other off-road e-bikes we have scored — 23 of them, priced $1,912–$4,460. They are a ranking inside that group, not an absolute grade: four stars means it beats most of that set on the measure, not that it hits some fixed standard.
Peers are drawn from a tight price band around this bike, so a $1,000 commuter is judged against other $1,000 commuters rather than against machines costing three times as much. Change the group and the stars would change with it.
The headline Genius Score is not decided by that group alone. It blends the category ranking above with a market-wide view across every bike we publish, so a bike cannot climb simply by sitting in a weak category. How we score.
The Biktrix Juggernaut Ultra FS Pro 3 Cruise is built to climb. Its sends power through the gears, so the arrives right where you need it, grinding up a loose, steep fire road with gear strapped on the back. The full suspension and wide 2.8-inch tires round out a package built for rough backcountry days well off the pavement.
You also get a , so you can ride without pedaling up to 20 mph. That makes it a e-bike, which opens up more places you're allowed to ride. The catch is distance: with this much power on tap and real hills to climb, the 910Wh battery won't stretch as far as the 45-mile claim suggests. It lands a 71 out of 100 Genius Score, strong on capability and held back mostly by how far it'll actually take you.
Pros & cons
What we like
- The Bafang Ultra mid-drive delivers through the gears, so you can stay seated and let the motor do the grinding on a long, slow ascent
- Full suspension plus 27.5 x 2.8-inch Schwalbe Moto X tires take the sting out of rocks and roots
- A large 910Wh gives you a real reserve for a long day of climbing
- The lets you pull away from a dead stop or ease up a hill without pedaling
- Dual-piston on 180mm rotors have the bite to slow a heavy bike on a steep descent
Worth weighing
- Real-world range is the soft spot: a heavy, high-torque bike on rough climbs pulls that 45-mile down quite a bit
- This Cruise trim is capped at 20 mph and 500 watts, so the motor's full output stays locked away
- You're paying a premium here, and while the hardware backs most of it up, a few rivals deliver comparable off-road hardware for less money
Key specs
The motor & power
Power is the whole point of this bike. The Bafang Ultra M620 puts out , and because a mid-drive feeds through the bike's gears, that force gets multiplied on a steep climb in a low gear. In plain terms, it hauls a loaded bike up grades that would leave lesser motors bogging down.
You also get a , which is handy for pulling away from a stop on a hill or giving your legs a break at the end of a long ride. Riding on the throttle drains the battery quicker, and it's what makes this a bike you can ride without pedaling up to 20 mph.
The one thing to understand going in is how this trim is set up. The motor's headline numbers are big, but the Cruise version caps how much you can actually use, so it's the low-speed pulling power that defines this bike.
Biktrix lists a motor with over , but this 'Cruise' trim ships limited to 20 mph and 500 watts of continuous output, which is exactly what keeps it in Class 2 and legal in more places. Expect smooth, torquey climbing power; top-end speed just isn't its game.
Range & battery
The 910Wh is genuinely large, and on paper Biktrix rates it for up to 45 miles. That number assumes easy going, though.
On the terrain it's built for — steep climbs, soft ground, a loaded rack — plan for noticeably fewer miles between charges. If your rides run long and remote, it's worth mapping out where you can top up, or thinking about a shorter loop, before you head off the pavement.
Biktrix's own listing throws out several battery sizes for this bike, anywhere from 728Wh to 910Wh. The one that matches this model is 910Wh, so that's the figure we go with; the smaller numbers belong to other configurations.
Ride & components
Full suspension is the story for rough terrain, and paired with the wide 27.5 x 2.8-inch Schwalbe Moto X tires it's set up to smooth out rocky, rutted trails. Biktrix doesn't publish the figures, so if fork and shock travel matter to your riding, confirm those before you buy.
Braking comes from Biktrix's own dual-piston on 180mm rotors, which give you enough control to bring a heavy bike down a steep descent. Shifting is a SRAM NX 11-speed drivetrain, a durable mid-tier setup with a wide enough gear range to keep you spinning up long climbs.
At roughly 85 pounds it's a substantial machine, which is right in line with other full-suspension off-roaders carrying a battery this size. It's rated to carry up to a 265-pound , so a rider plus gear on a hunting or camping run stays well inside its limit.
Price & value
At $3,186, this sits firmly in premium territory, and the hardware earns most of that: a Bafang Ultra , full suspension, a big battery, and solid brakes and drivetrain all stack up.
The value here is solid without being a bargain. You're paying for serious climbing capability and a large battery, but the limited range keeps it from being a slam-dunk, and a few competitors put together this kind of off-road setup for less. If your budget is tight, it's worth shopping around before you commit.
Who it's for
The backcountry hill-crawler
If your riding means steep, loose climbs with gear on the back, like fire roads, hunting trips, or rough forest tracks, the turns a brutal grade into something you can actually ride up instead of pushing.
The no-pedal cruiser
If you like having the option to sit back and let the carry you up to 20 mph, this gives you that on demand, which is a real relief on a long climb or when your legs are done at the end of a ride.
The all-day explorer
If you're planning long, remote days far from an outlet, look hard at range first. The battery is big, but a power-hungry motor on rough ground will eat into those 45 miles, so a spare battery or a tighter loop is the smart move.
The speed chaser
If you want to cruise at 28 mph on open ground, this Cruise trim isn't your bike. It's capped at 20 mph, so a model will serve you better when outright speed is the goal.
Frequently asked
Does the Biktrix Juggernaut Ultra FS Pro 3 Cruise have a throttle?
Yes. It has a , so you can get moving and hold speed without pedaling up to 20 mph.
Can you ride the Biktrix Juggernaut Ultra FS Pro 3 Cruise without pedaling?
Yes. The throttle lets you ride without pedaling up to 20 mph, which is what makes it a e-bike. Just keep in mind that riding on the throttle uses up the battery faster.
What class is the Biktrix Juggernaut Ultra FS Pro 3 Cruise?
It's a Class 2 bike: it has a throttle and is limited to 20 mph and 500 watts in this Cruise configuration.
How far does the Biktrix Juggernaut Ultra FS Pro 3 Cruise go on a charge?
Biktrix rates the 910Wh for up to 45 miles. On the steep, rough terrain this bike is built for, plan for meaningfully less than that per charge.
How much torque does the Biktrix Juggernaut Ultra FS Pro 3 Cruise have?
It produces from its Bafang Ultra mid-drive, one of the higher figures you'll find on a production e-bike.
How much does the Biktrix Juggernaut Ultra FS Pro 3 Cruise weigh?
About 85 pounds with the battery installed, which is normal for a full-suspension off-road e-bike carrying a battery this large.
How much does the Biktrix Juggernaut Ultra FS Pro 3 Cruise cost?
It's priced at $3,186, which puts it in premium off-road territory.
How it compares to its siblings
This one comes with real tradeoffs: the lowest claimed range in the family at 45 mi (versus 55-95 mi elsewhere) and the lowest payload capacity at 265 lb, well under the 330-380 lb on every other Juggernaut. It shares dual-piston 180mm brakes with the Duo 4 Step-Over and SRAM NX 11-speed with the Eagle 2, priced in the middle of the pack at $3186. Skip it if range or payload matter — other siblings at similar or lower prices beat it on both.
Biktrix Juggernaut Ultra Duo Pro Step-Thru review Biktrix Juggernaut Ultra Duo 4 Step-Over review Biktrix Juggernaut Ultra Eagle 2 review Biktrix Juggernaut Hub Duo Step-Over 2 review
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This $3,499 fat-tire off-roader pairs a monster mid-drive motor with a big 910Wh battery for riders who actually head deep into rough country.
Read the reviewBiktrix Juggernaut Ultra FS Pro 3 Cruise is ranked on:
Guides worth reading
- Mid-drive vs hub motorWhere the motor sits changes how the bike climbs, what it costs, and what wears out. Neither is better everywhere.
- E-bike classes explained: Class 1, 2 and 3Three classes, two questions: does it have a throttle, and how fast does the motor keep helping.
- Nominal vs peak watts on an e-bikeThe wattage in the headline is usually the peak figure, which can be roughly double the number the motor actually sustains.
How we score: the Genius Score blends a bike's capability against same-price peers with its value for the money, weighted for what this off-road buyer prioritises. Specs are pulled from the manufacturer's live page and normalised (nominal vs peak watts, true weight with battery). Ratings are our estimate from specs, not a lab test.