Overall rating 
If you’re after a proudly fat-tyred all-terrain e-bike that can handle just about anything you throw at it (as long as you can handle the bike, that is) then it’s hard to imagine anything fitting the bill more than one of our top recommended MTBs, the Cyrusher Trax.
Part electric mountain bike, part dirt bike and - if you hadn’t already noticed - painted in such a way to really turn heads (we say this from experience), the Trax is one of Cyrusher’s top of the line e-bikes, and we reckon rather unique with its step-through design. Off-road weekend adventures that are easily accessible to everyone is something to shout about, while a step-through frame also means you can hop off the bike at the top of a muddy hill without worrying about losing your balance and toppling right back down it. Double win.
Good for
- Off-road thrill-seekers
- Not-so-tall riders
Pros
- Step-through frame
- Lots of power
- Fat tyres
- Full suspension
- Eye-catching paintwork
Cons
- Big and heavy
- No rear light
- Expensive
Expert Verdict
| Components and build |
|
| Safety |  |
| Performance | |
| Comfort and practicality | |
| Overall rating | |
It might be slightly intimidating to look at, but I found the Cyrusher Trax to be a dream to ride, even on bumpy terrain, thanks to those 26x4” fat tyres and suspension that help soak up all the impact and made me feel like I was riding on a cloud, rather than a muddy field in autumnal England. It’s definitely not the kind of bike you’d get away quickly on without a motor, but as Cyrusher’s first bike with a torque sensor, I didn’t need to pedal much at all for the assist to kick in.
The 250W motor ensures the bike remains road-legal in the UK, but that feels plenty fast enough and on the highest of five assist levels it won’t take you long to get there. Downsides, naturally, concern the sheer weight and size of the thing. This is definitely not the kind of bike you can chuck into the boot or over your shoulder on your commute to work (I didn’t even attempt to do either), so you’ll want to make sure you’re going to make the most of those tyres before you pick one up.
Learn more: full details of the Cyrusher Trax
Specifications
| Sizing | Height 85-105cm / Length 193cm |
| Max Rider Weight | 150kg |
| Frame | Aluminum full suspension |
| Frame Material | Magnesium alloy |
| Wheels | 26 x 4” fat tyres |
| Weight | 40kg |
| Gears | Nine-speed Shimano |
| Brakes | TLogan hydraulic 180mm disc brakes front + rear |
| Range | 50-56 miles |
| Motor | 250W (limited) 80Nm Bafang electric motor |
| Battery | 52V 20Ah LG lithium (removable and lockable) |
| Charging | 5-7 hours (charger included) |
| Speed | 15.5mph (UK e-bike speed limit) |
| Power modes | 5 assist modes |
| Display | 3.7” LCD smart computer |
| Lights | Front |
Components and build quality
The obvious place to start is with those tyres. At 24x4” inches they’re not huge, but they’re certainly fat, easily soaking up the ground beneath you no matter the terrain. Hand over your cash for the Trax and you’re also getting full suspension, which is crucial to keeping your ride smooth when you transition from the tarmac to the mud, and I could really feel the additional comfort when I hit holes and bumps. This feels like a bike that has your back.
Getting you around is a 250W Bafang motor and a 52V 20Ah LG battery (removable and lockable) which should return around 56 miles between charges. Nines-speed Shimano gears dovetail nicely with the five adjustable levels of pedal assist to give you lots of control when you start taking on hills. There’s no throttle included with the default configuration, but you can fit one and unlock the motor should you choose to ride on private tracks.
The Trax uses a torque sensor which not only makes it feel like a more premium ride, but also really helps counteract the bike’s weight on hilly surfaces, as the motor engages more quickly. And while we’re on the subject of weight, at 40kg Cyrusher’s step-through is easily double the weight of a lot of bikes we review here. That’s not a criticism; it’s pretty obvious that a bike of this style is going to be heavier than your average commuter e-bike, but you do feel it, especially if you’re unfortunate enough to have to cycle it across South London with a flat battery, as one Electrohead did.
A fairly large 3.7in LCD display is centrally mounted on the handlebars, which shows your speed, range, pedal assist level and remaining battery level, all of which are easily visible at a glance.
Safety and security
The Cyrusher Trax’s battery is integrated into the frame and is removable and lockable, but as this isn’t really a commuter bike it’s unlikely you’ll be needing to charge it in the office, which is when being able to slip a battery out of a bike’s frame is particularly useful. Still, something to bear in mind.
I encountered no real problems with the 180mm hydraulic disc brakes, which stop the bike nice and quickly, while the integrated front light offers decent visibility.
The obvious thing to consider here in terms of security is where the bike is going to live. Given its size and weight, it’s not something you can easily carry up stairs or store in a hallway, and it’s definitely too attention-grabbing to leave locked up outside for long (something I can attest to based on the number of curious teenagers who asked me if they could “have a go” during testing). Probably more of a garage job, if possible.
Performance and handling
Cyrusher bills the Trax as an all-terrain e-bike and I’m not going to argue with that.
The step-through design feels pretty unique for a bike of this type, and it means that while not everyone will be able to comfortably handle the weight, smaller riders aren’t left out. I’m over average height for a man of my age, but my legs aren’t the longest so I always appreciate the ease of a step-through, as do my jeans.
Even with a motor limited by the law, the bike has a real kick on the highest pedal assist level, and thanks to the full suspension and fat tyres you don’t feel unsteady when picking up the pace on the grass or uneven terrain.
You’ve got nine gears to play with and five assist levels. I found that in order to best combat the bike’s heft it was easiest to leave the bike on the highest of the five, although whether you’re able to do that will depend on how long you plan to ride and whether you’re confident in the battery holding out.
Climbing hills still requires a fair amount of pedal power on higher gears, even with maximum pedal assist, so make sure you remember to drop them down on approach and give yourself a bit of speed. The last thing you want is to have to do all the (very) heavy lifting yourself because you’ve misjudged it. I speak from experience.
As I’ve already touched on, the Trax employs a torque sensor, which means the motor engages pretty much as soon as you start to pedal, and I never felt like I wasn’t fully in control as I accelerated up to the 15.5mph speed limit. Torque just makes for a more natural ride.
Comfort and practicality
The Cyrusher Trax might not have the biggest tyres, but you won’t find much fatter, making it the kind of bike you never worry about approaching bumps on. Full-sus peace of mind goes a long way too, and while this is a bike designed for more extreme adventures, you won’t necessarily feel the consequences of those in your backside the following day. The saddle is fairly well cushioned too. It’s a big bike to handle, but an easy one too, and the step-through frame makes it even more accessible.
One thing you can’t call the Trax, though, is practical. Not for every day A-to-B purposes anyway. You feel every one of those 40 kilograms when you try to lift the bike and if you do happen to have battery failure mid-ride, it’s not much fun. The Trax is a luxury e-bike, but if it’s your only one, you might struggle to make it work.
