The Biktrix Juggernaut FS XD Fat is a trail-crushing monster, packing a 2000+ watt motor into a full-suspension fat bike frame.
We put this 2024 model through its paces, pushing it to the limit on everything from treacherous descents to grueling climbs to see if it's worth the price tag.
Spoiler alert: this bike's got some serious muscle. But does it deliver the performance to match its full-suspension fat bike pedigree?
Strap in as we break down the nitty-gritty of this electric powerhouse.
Our Verdict
We found the Juggernaut FS XD Fat lives up to its name – it's a true trail juggernaut.
That monstrous motor and beefy battery had us powering up climbs we'd normally walk. The suspension? Buttery smooth, even when we got rowdy.
But let's be real – this bike's no featherweight. If you're after nimble handling, look elsewhere.
For riders craving raw power and all-day adventures, though? The Juggernaut FS XD Fat delivers in spades.
Peaks:👍
- Monstrous 2000+ watt motor
- Long-lasting 17Ah battery
- Top-notch suspension system
- Versatile design for various terrains
Troughs:👎
- Hefty weight may impact maneuverability
Juggernaut FS XD Fat Review
Biktrix isn't messing around with the Juggernaut FS XD Fat. This bike screams premium from every angle, targeting riders who demand top-tier performance and won't settle for less.
That 2000+ watt motor is a game-changer for conquering impossibly steep climbs.
At $5,499, this e-MTB represents a serious investment in your riding experience. We're talking full-suspension, fat tires, and enough power to make molehills out of mountains.
After putting the Juggernaut through its paces, we can confidently say you're getting a lot of bike for your buck. The old adage “you get what you pay for” rings true here – this bike's built to last and perform.
Price: $5,499.00
Weight and Frame
Let's address the elephant in the room – at 75 lbs (34 kgs), the Juggernaut FS XD Fat is a beefy ride.
But here's the thing: that weight translates to rock-solid stability when you're bombing down technical descents or plowing through deep mud.
We found the burly aluminum frame inspires confidence, taking big hits in stride without a whimper.
Sure, you might feel that weight on tight switchbacks or when loading it onto a bike rack. But for the target rider – someone seeking raw power and all-terrain dominance – the trade-off is more than worth it.
This bike's built like a tank, and it shows in the best possible way.
Battery Life
Talk about juice for days! The Juggernaut FS XD Fat packs a punch with its 17.5 Ah battery, promising up to 97 km on a single charge.
When going head-to-head with the Nireeka Mega 1500, a notable competitor with a range of 80 km- the Juggernaut comes out on top going at least 17 km further.
We put it to the test on a grueling all-day epic, mixing punchy climbs with long fire road grinds, and still had power to spare at the end.
The removable battery is a smart touch, making it easy to charge or swap in a spare for truly monster rides.
Real-world range will vary, of course – crank up that assist on technical climbs and you'll burn through juice faster. But even in our most aggressive riding, we never felt range anxiety creeping in.
Motor Performance
The 2000+ watt motor on this beast is an absolute powerhouse. We pointed it at the steepest, most ridiculous climbs we could find, and the Juggernaut delivered.
What really impressed us was the smooth power delivery – no jerky engagement here, just a buttery surge of assist that had us clearing technical sections with ease.
Whether you're grinding up seemingly endless fire roads or tackling punchy singletrack climbs, this motor's got your back.
It's not just about raw power, though – the refined tuning means you always feel in control, even when the trail gets sketchy.
Display and Controls
Biktrix nailed it with the user-friendly display. We could easily glance down and catch our speed, battery life, and assist level.
The controls are intuitive enough that we rarely had to take our eyes off the trail – crucial when you're pushing your limits.
One minor gripe: the buttons could be a touch more tactile for use with gloves.
But overall, the system strikes a great balance between information and simplicity. You'll spend more time shredding and less time fiddling with settings.
Suspension System
We expected good things from the RockShox rear shock, and it didn't disappoint. Paired with the capable front fork, this suspension setup soaks up big hits and chattery terrain alike. We found ourselves purposely aiming for the roughest lines, and the Juggernaut just ate it up.
The real standout is how well the suspension maintains traction, even when you're putting down serious power.
On loose, technical climbs where we'd normally spin out, the Juggernaut kept clawing its way up. It's not just about comfort (though your lower back will thank you on long rides) – it's about maintaining control even under treacherous conditions.
Wheels and Tires
True to the “Fat” in its name, those chunky 26×4″ tires are a defining feature. We tested them across everything from hardpack to deep sand, and the traction is phenomenal.
They absolutely shine in soft conditions – if you've ever wanted to rip through fresh snow or cruise a beach, this is your ticket to ride.
The added stability from that wide footprint is a confidence booster, especially for less experienced riders.
Our only caveat is that you'll feel that rolling resistance on paved sections. But let's be real – if you're buying this bike, you're not looking to set speed records on the road.
Braking System
With great power comes great responsibility, and the quad-piston hydraulic brakes on the Juggernaut are up to the task.
We pushed them hard on white-knuckle descents, and they never faded or left us wanting. The bite is progressive and predictable – perfect for modulating your speed through technical sections.
That 220mm rear rotor is no joke, providing serious stopping power even when you're loaded down with gear for a bikepacking adventure. These brakes inspire confidence, letting you push your limits knowing you can rein things in when needed.
Drivetrain
The 11-speed SRAM NX drivetrain offers a wide range of gears, and we found ourselves using every single one. Shifting is crisp and reliable, even under load.
But the real star of the show? That innovative dual chain system.
Not only does it provide a backup if one chain fails (though we never experienced any issues), but it also optimizes power distribution.
We noticed the difference immediately on technical climbs – the bike just hooks up and goes, finding traction where lesser setups would spin out. It's overkill for casual riders, sure, but for those pushing the limits of what's possible on an e-MTB, it's a game-changer.
Juggernaut FS XD Fat Facts and Figures
Geometry Configurations
| DIMENSION | MEASUREMENT (M-17") | MEASUREMENT (L-19") | MEASUREMENT (XL-21") |
|---|---|---|---|
| Wheelbase | 52 inches (132 cm) | 52.4 inches (133 cm) | 52.8 inches (134 cm) |
| Total Length | 79.9 inches (203 cm) | 80.3 inches (204 cm) | 81.1 inches (206 cm) |
| Reach | 17.3 inches (44 cm) | 18.1 inches (46 cm) | 18.1 inches (46 cm) |
| Standover Height | 28.7 inches (73 cm) | 29.1 inches (74 cm) | 30.3 inches (77 cm) |
| Minimum Saddle Height from Ground | 33.1 inches (84 cm) | 34.6 inches (88 cm) | 37 inches (94 cm) |
| Maximum Saddle Height from Ground | 40.9 inches (104 cm) | 42.5 inches (108 cm) | 44.1 inches (112 cm) |
| Handlebar Height | 40.2 inches (102 cm) | 41.7 inches (106 cm) | 41.7 inches (106 cm) |
Note: Measurements are provided for three different frame sizes: M (17″), L (19″), and XL (21″).
Full Specifications
| SPECIFICATION | DETAILS |
|---|---|
| Frame | 6061 aluminum w/rear suspension |
| Battery | Total capacity of 52v 34ah 1794wh: 52v 17.5ah 910wh (internal battery) + up to 52v 17ah 884wh (external range extender battery) |
| Mileage | Up to 60 miles on a single charge |
| Brakes | Iiipro e500 quad piston hydraulic w/203mm front, 220mm rear rotor |
| Transmission System | SRAM NX 11 speed |
| Bike Weight | 33.1kg (73lb) for M and L sizes, 33.6kg (74.1lb) for XL size (without battery) |
| Motor | XD coaxial drive motor, 2000+ watt |
| Fork | Biktrix inverted air fork w/100mm travel, lockout, and preload |
| Rear Suspension | RockShox Monarch RL w/51mm travel, 190mm eye-to-eye |
| Tires | 26x4" Chaoyang, 26x4.8" |
Final Thoughts
The Juggernaut FS XD Fat isn't for everyone – and that's precisely the point.
This is a specialized tool for riders who crave raw power, uncompromising durability, and the ability to tackle any terrain. Yes, it's heavy. Maybe a bit pricey. But for the right rider, it's also an absolute blast.
The thoughtful engineering-from the monstrous motor to the clever dual chain system-impressed us. It lets you explore further and tackle trails you'd never dream of on a standard mountain bike.
Is it worth it? If you're serious about off-road e-biking and have the budget, absolutely. This bike delivers top-tier performance and durability that'll last for years.
For those primarily sticking to smoother trails, there are certainly more affordable options out there. But for those who live for epic, all-day adventures and “I can't believe I just cleared that” moments, the Juggernaut FS XD Fat is your ultimate dust-kicking, grin-inducing companion.
FAQs
What is the range of the Juggernaut FS XD Fat on a single charge?
The Juggernaut FS XD Fat comes with a 17.5Ah battery that provides a range of up to 60 miles on a single charge. However, the actual range may vary depending on factors such as terrain, rider weight, and the level of assist used.
Is the Juggernaut FS XD Fat suitable for all types of terrain?
Yes, the Juggernaut FS XD Fat is designed for versatility across various terrains. It features wide, chunky tires that offer excellent traction on surfaces like snow, sand, and mud.
Additionally, its RockShox rear suspension and capable front fork work together to absorb bumps and vibrations, enhancing control and comfort on rugged trails and urban roads alike.
