Stealth electric bikes. Stealth electric bikes

Stealth electric bikes

Australian-made electric bike manufacturer Stealth Bikes has rolled out their full line of burly e-bikes for 2021, and continues to push the boundary between mountainbike and dirtbike even further with their high-speed, high-adrenaline two-wheelers.

Stealth took a unique approach to the eMTB game back in 2008 with the original Stealth Bomber, and they’ve only gotten wilder since. You’re more likely to mistake a Stealth for a motocross bike than a bicycle, and that’s the way they want it.

In fact there’s only one bike in their lineup that actually utilizes a rear derailleur or even a single crown fork, with all other models opting for their own unique combinations of high-torque motors and innovative transmissions.

These bikes defy all convention, but certainly guarantee a good time regardless of which one you’re throwing a leg over. We’ll dive into the full range of Stealth bikes for 2021 below to highlight some of the unique aspects of these powerful off-roaders.

Stealth Bikes B-52

The Stealth B-52 is something of a singularity in the electric bike world.

It has an ignition key, but also a set of SR-Suntour cranks and platform pedals.

Stout 24-inch spoked wheels look like something taken from a demonic BMX bike, but the dual-crown 200mm fork they’re sitting in defies all explanation.

And honestly, we can’t explain it to you either. You just have to ride one.

A quick glance at the spec sheet will have you wondering if the pedals actually play any part in propelling the 112-pound B-52 up to its 50mph top speed.

But pedaling is actually half the fun on a B-52, and that’s where Stealth’s unique Vboxx technology comes in. The Vboxx is a 9-speed sequential gearbox that utilizes pedal strokes to double torque output when accelerating.

Think of it as a pedal-driven supercharger, because that’s certainly what it feels like.

Stealth advertises a 60-mile range for the B-52’s 2,000Wh battery, but that figure is based on “economy” mode, which only utilizes a fraction of the bike’s ludicrous 6200-watt peak output to keep things moving.

To the B-52’s credit, however, even at full power Stealth claims a full 25-mile range from the battery.

That’s pretty impressive considering that even KTM’s modern electric dirtbike, the Freeride E-XC, struggles to travel even 20 full miles in performance mode and shares the same 50mph top speed.

In terms of suspension, the B-52 comes with a factory-tuned Fastace fork, which delivers a full 200mm of travel in the front and is fully adjustable for preload, compression, and rebound. A DVO Emerald fork is also offered as an optional upgrade if you like your front-squish extra premium.

Out back the B-52 is even more impressive, packing a full 250mm of travel from a DNM Burner coil shock.

Magura four-piston hydraulic brakes bite down on 203mm rotors to ensure all that power and weight stays under control at even breakneck speeds, and grippy Duro Razorback tires supply the teeth to back it up.

What may surprise riders the most about the B-52 is that just like every other model in the Stealth Bikes lineup, all that power can be fully recharged in just three hours…

Stealth Bikes F-37

Rowdy little-brother to the B-52, the F-37 is a high-powered eMTB designed to plow through the rowdiest singletrack, and fits into the Stealth lineup at a balanced 50/50 mountainbike/motorbike hybrid.

The F-37 shares many components with the B-52, including the same 200mm Fastace dual-crown fork and 24”x3.0” wheels and tires, but opts for a shorter-travel DNM coil shock in the rear (relatively speaking, it’s still a full 200mm).

The same powerful Magura MT5 four-piston hydraulic brake setup comes from the B-52 as well, so stopping power is available in spades on any terrain.

stealth, electric, bikes

Top speed on the F-37 is a bit slower, with the 1500Wh battery maxing out at 38mph, but the range figures are the same as the B-52 on a full charge in both the economy and competition modes.

Pedaling efficiency and a much lighter curb weight of 88lbs make those distances possible, with some help from the efficient 2-speed transmission housed inside the F-37’s bottom bracket.

The F-37 also features a switch to engage regenerative braking, which can extend the bike’s range even further by scavenging energy from the rear wheel and feeding it back to battery pack.

Stealth Bikes P-7R

Half electric commuter, half enduro bike, the P-7R is the is the only model in the Stealth lineup that could be accused of resembling a traditional mountain bike.

That’s because although the sturdy utilitarian frame is unmistakably a Stealth Bikes creation, the P-7R gets a full suite of traditional eMTB parts.

The front fork, for instance, is a 180mm Durolux, a premium single crown model from the folks at SR Suntour that is fully adjustable for high and low speed compression damping.

Suntour also supplies the squish at the rear, with a shorter 120mm travel DUAIR shock that is adjustable for rebound and also has a lockout funtion for technical climbs.

Speaking of climbing, the P-7R features a wide-range 9-speed mountain bike cassette designed to allow the bike to climb using only pedal power. That’ll come in handy if you can’t quite make it home from the trail or office on a single charge.

Of course with a claimed 100 mile range from the P-7R’s optional 1500Wh battery upgrade, you’d have to put in a pretty long day in the saddle to run the battery dry.

As you might expect from a bike spending some amount of time on public roads, the P-7R won’t keep up with the off-road focused B-52 and F-37 models. Although it shares a peak output with the latter, the top speed cuts out at 28mph.

stealth, electric, bikes

And although the P-7R is by far the lightest of the three models, weighing in at only 63 lbs, Stealth still specs it with the same powerful hydraulic brakes and rotors from Magura, so stopping distances should be even more impressive on this daily rider.

It’s also worth mentioning that anyone digging the Stealth Bikes aesthetic who isn’t planning on any serious offroading tcan opt for a commuter-focused package called the Stealth P-7.

The P-7 shares the same quality components as the P-7R but keeps the power down to a conservative 250w output, which will still manages to propel the P-7 up to a full 20mph with a 100 mile range using the available 1500Wh battery.

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Stealth Electric Bikes

Stealth Electric Bikes is an Australian company producing what they call “the finest electric bikes on earth.” Built with military precision, these bikes are almost a cross between a motorcycle and a bicycle. Stealth’s engineering team has built three models with premium parts. Each model is built around a motocross style and includes an all-terrain frame design that can handle any mountain bike trail you throw at it.

No matter what your riding style, Stealth has a model for you. The B-52 is an all-around endurance machine, while the F-37 excels on technical downhill trails and the H-52 is built for motocross enthusiasts who are looking for something more.

If you are ready to fly under the radar, a Stealth Electric Bike just may be your vehicle of choice.

The Stealth P-7

The Stealth P-7 will transform your typical daily commute into a thrilling adventure. Forget about wasting your time in traffic and spending your money on gas with the P-7! Commuting can now be something that you can enjoy, instead of dreading. The Stealth P-7 is equipped with a 9-speed gear train and has a gear range low enough to climb up steep hills. Weighing in at 64 pounds, the Stealth P-7 can travel up to 60 miles and can hit a speed of 20 mph on a single charge.

Stealth P-7

The Stealth P-7R

The Stealth P-7R weighs in at 63 pounds and can travel up to 100 miles while reaching a maximum speed of 28 mph. The P-7R is equipped with a gear range low enough to climb steep hills or even ride without any electrical assistance. The Stealth P-7R comes with a twist grip throttle, which gives the same feeling as riding a motorcycle or dirtbike. You can easily add the P-7R to a bike rack or transport it in a van.

The Stealth B-52

A hybrid model like none other that you will see, the Stealth B-52 combines traditional pedal power with 5,200 watts of electric power (Stealth’s highest power output), which enables you to hit a top speed of 80 km/h (50 mph). It has a range of up to 80 km (50 miles) on a single charge. The Stealth B-52 includes an advanced 9-speed sequential gearbox and Magura hydraulic disc brakes that let you stop instantly.

Stealth B-52

The Stealth F-37

If you want to raise your trail-riding game, the Stealth F-37 is your bike. It makes full use of Stealth’s hybrid-electric drivetrain with an ultra-lightweight transmission and 3,700 watts of power. Rider control is maximized with a rear-wheel Stealth frame, and the handlebars are built for ultimate maneuverability. The Stealth F-37 can hit a top speed of 60 km/h (37 mph) and has a range of up to 100 km (62 miles) on a single charge.

stealth, electric, bikes

The Stealth H-52

Built for motocross aficionados, the Stealth H-52 delivers an incomparable riding experience no matter the conditions. With very low maintenance and an extra-quiet ride, the H-52 is built for lots of use. Its 5,200 watts of power can propel it to a top speed of 80 km/h (50 mph) with a range of 55 km (34 miles). When you slow down and stop, be sure to activate the Regen braking, which converts kinetic energy into electrical energy, which is then routed back to the battery, extending your ride time and range.

Stealth H-52

Buy Stealth Electric Bikes

Built by hand with advanced ebike technology in Australia, Stealth Electric Bikes are available for sale through qualified dealers around the world. are not listed on the manufacturer’s website, but the B-52 sells for 9,999 through a dealer in the United States.

This investment in an electric bike will serve you well as you seek adventures and thrills beyond the dreams of the crowds. You get the power of an engine with the control of biking on your own and the lower cost of an electric-powered motor instead of a gas-powered engine. Built with military durability and strength, these pieces of advanced technology will last for years with proper care. Call a dealer today to set up a test drive so you can get started on purchasing yours!

The 5 Fastest E-Bikes for Sale in 2023

These e-bikes are not only fast, but have excellent range, too.

Readers like you help support MUO. When you make a purchase using links on our site, we may earn an affiliate commission. Read

The e-bike craze has officially hit the USA, and tons of performance e-bikes capable of extreme speeds are swarming the market. These bikes do, of course, have to abide by government regulations that limit their speed depending on what class they fall under.

So, if you’re purchasing an e-bike, ensure it meets your local laws and regulations. Many manufacturers ship your e-bike with a restricted top speed to abide by local laws. But they allow you to unlock the bike’s full speed through certain modes that can be used in special settings.

Let’s explore the fastest e-bikes available in the US!

Hi Power Cycles Revolution XX

The HPC Revolution XX is the type of e-bike you look at and immediately begin to wonder if e-bikes are getting slightly out of hand. The Revolution XX is the world’s fastest e-bike, with a top speed of 74 miles per hour (tested on a dry lake bed), thanks to an output of 10,000 watts, or 13.4 horsepower. The crazy part is that you can even pedal along at that speed—yikes!

The fact that this e-bike can achieve 74 mph proves that e-bike manufacturers have lost their collective minds. Quietly, this might start an e-bike performance war that could rival the competition going on between the bonkers-fast Tesla’s Model S Plaid and the Lucid Air super EV sedan. The funny thing is that the Revolution XX that will ship to you in the States complies with Class 2 regulations, which means its top speed is limited to 20 mph. Only with the limited top speed could you expect to achieve the maximum claimed range of almost 100 miles.

You can then choose to activate the off-road mode wherever it’s legal to do so, which gives you full power. Only 20 of these super e-bikes will be built, so if you want one, hurry up and order one. The price is an eye-watering 20,000. One thing is for sure: if you want the absolute fastest e-bike out there, your wallet will not go unscathed.

Hi Power Cycles Revolution X

The Revolution X is a 13,000 e-bike with a top speed of 65 miles per hour (if you opt for the 8,000-watt model, which adds 2,000 to the base price). If you need to prioritize torque over top speed, you can order your Revolution X with the Torque motor, which is better for climbing hills and going off-road. You can choose between three battery pack sizes: 1.3 kWh that’s good for 55 miles of range, 1.8 kWh that pushes range up to 80 miles, and the top 2.4 kWh pack that will take the bike up to 100 miles on one charge.

If you want the ultimate top-speed machine, you can go for the Speed motor, which emphasizes outright speed over hill-climbing ability. The great thing is that choosing whichever motor fits your needs best is a no-cost option. Hi Power Cycles (HPC) allows you to customize your Revolution X as much as you want; you can even choose any color you want for the wheels and body if you go for the Stage 2 option, which will set you back 700.

The HPC Revolution X isn’t a cheap e-bike by any stretch of the imagination, but if you want a high-quality e-bike capable of achieving amazing speeds, the Revolution X is hard to beat.

Stealth Electric Bikes B-52

The Stealth B-52 e-bike doesn’t just have an extremely cool name; it’s also very fast—this bike can accelerate to a top speed of 50 mph. The B-52 features a 2.5 kWh battery that provides up to 43 miles of range, and it can be fully recharged from empty in 3 hours.

This ultra-fast e-bike also features a six-speed transmission, so it’s definitely useful in many scenarios. The e-bike itself features a futuristic design that’s sure to capture many looks wherever you go. Honestly, like many of these super powerful e-bikes, it looks more like a motocross bike with pedals attached to it, but the look works very well.

Another cool visual touch is the placement of the company’s logo, which adorns the side of the B-52 in dramatic fashion, making this e-bike instantly recognizable as a Stealth product.

Delfast Top 3.0i

The Top 3.0i will be shipped to the buyer in legal mode, essentially making it a Class 2 e-bike limited to 20 mph. As crazy-fast as this bike is, it’s even crazier to think about riding around on a bike that looks this aggressive while being restricted to a 20 mph top speed. With the limiter in place, fast cyclists on traditional bikes can speed past your restricted Delfast bike. Thankfully, you can unlock the bike’s 50 mph top speed if you’re going off-road by entering Unlimited Mode. Unlimited Mode gives you access to the Top 3.0i’s full power.

The Delfast Top 3.0i is another e-bike that blurs the lines between a full-on electric motorcycle and an e-bike. But Delfast markets the Top 3.0i as an e-bike, even though its appearance is so radical. This e-bike wouldn’t look out of place in a Blade Runner movie, especially in the hands of one of the bad guys. It looks like a futuristic motocross bike, but without any unwanted noise because it’s fully electric.

The 50 mph top speed makes the Top 3.0i a formidable e-bike, guaranteeing no other cyclists on traditional bicycles will simply pedal right past you. The top speed is especially amazing when you consider that the range of this monstrous e-bike is an astonishing 200 miles thanks to its large 3.5 kWh battery. Of course, it doesn’t beat the Optibike’s 300 miles of range, but considering the Delfast Top 3.0i can smoke the Everest in terms of top speed, nobody will be complaining too much.

Another great thing about the Delfast Top 3.0i is that the official website carries replacement motors (attached to a new wheel and tire combo) and replacement batteries.

Optibike R22 Everest

The Optibike R22 Everest is an impressive e-bike. It’s very fast, with a top speed of 36 mph, which puts it in rarified air in terms of e-bikes. It’s also one of the few e-bikes that can handle pretty much anything you can throw at it. There isn’t much that will hinder the R22’s progress, whose powerful electric motor serves up to 190 Nm (140 lb-ft) of torque. But there’s so much more to it.

The R22 Everest offers up to 300 miles of range, which means it can go toe to toe with many electric cars and is among the e-bikes with the longest range. The reason for this extended range is the battery, which has a capacity of 3.26 kWh.

The Optibike Everest R22 is the perfect example of an e-bike that can easily serve as your daily driver. The fact that it’s equipped with a throttle and an enormous battery pack makes it an ideal companion for urban driving, even for longer commutes. This is especially true if you’re navigating a city with lots of hills, like some in California.

Using the R22 as your daily urban runabout would definitely be a breeze thanks to its 36 mph top speed. The great thing about the R22 Everest is that you’ll arrive quickly at work sweat-free thanks to the e-bike’s throttle (so you don’t have to pedal at all), and you probably won’t have to charge it for the entire week thanks to the huge battery capacity.

Performance E-Bikes Offer Impressive Versatility

It will be interesting to see how manufacturers try to top the performance of the current crop of e-bikes in the future. The models described above are all absolute monsters and feature incredible ranges to go along with their earth-shattering performance, making for versatile rides that offer speed and everyday usability. Hopefully regulations don’t start to sap the fun out of e-bikes in the future because it will be great to witness how far e-bike performance can be pushed.

Unlimited range stealth ebike never needs plugging in

If e-bikes tend to look a little ungainly for your tastes, check out this thing from Barcelona’s Nua Bikes. With the motor, sensors and battery built into a discreet hub unit, the Nua Electrica is barely distinguishable from a regular fixie, and its innovative self-charging mode means you can get away without ever charging it.

Weighing in at just 13 kg thanks to a full titanium frame, the Nua Electrica is the stealthiest single-speed e-bike we’ve seen to date. It uses a very cool motor/battery combo unit that we suspect we’ll be seeing a lot more of in the coming months and years.

The Zehus Bike is an all-in-one hub unit that weighs just 3 kg (6.6 lb) and fits into any frame with a rear wheel dropout 120 mm (4.7 in) or wider. It contains a 250-watt motor, a 160-watt-hour battery, several sensors, a Bluetooth communications system and all the electronics required to run an e-bike.

Thus, within this one hub, you’ve got yourself about 30 km (18.6 Mi) of full power pedal-assist electric cycling, without a single protruding wire, dash or set of buttons. And that enables builders like Nua, Jitensha, Deus Customs and many others, to produce stunningly minimalistic ebikes that you’d have to look at twice to pick as electrics.

You can choose between six cycling modes through an app on your phone, with the most interesting one being a self charging mode. Using a tilt sensor built into the back wheel, the drive unit can be set such that it only assists you on uphill climbs and taking off from a dead stop, giving you help where you need it most. And it recharges the battery with regenerative braking, and also sips a bit of power from you when you’re pedaling along the flat or going downhill. The company says if you leave it in this mode, you can get around indefinitely without ever charging the thing – obviously this will depend on the terrain, but it’s a neat idea.

It also might actually be practical with a bike like the Electrica, which is less than half the weight of some of the chunkier e-bikes going around and should thus be a much less onerous pedal with the e-part switched off.

The Electrica uses a Gates carbon belt drive, for maintenance-free reliability and quietness, and it’s got a Sugino Pista crankset, a Gilles Berthoud saddle and Brooks leather grips, all of which sound suitably fancy. It also rocks Shimano brakes and Mavic wheels with Hexlox anti-theft locks. Nua has designed and 3D printed a set of special sliding dropouts that let you remove the rear wheel without having to take any tension out of the belt drive, which is a nice touch.

The price? Well, titanium frames, forks and seatposts don’t grow on trees. The bike pictured here is around €4,000 (US4,500). But it’s not the Zehus e-hub causing the expense, as other brands like Jitensha are selling similar-looking classic machines for less than half that price using the same drive technology.

Editor’s note: the Electrica, and other Zehus-powered bikes, can certainly be plugged in and charged if you want. Apologies if we were ambiguous on this point.


Loz has been one of our most versatile contributors since 2007, and has since proven himself as a photographer, videographer, presenter, producer and podcast engineer, as well as a senior features writer. Joining the team as a motorcycle specialist, he’s covered just about everything for New Atlas, concentrating lately on eVTOLs, hydrogen, energy, aviation, audiovisual, weird stuff and things that go fast.

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No such thing as a free ride. If it is charging from you peddling, it is using your energy. So while it may help you “start” and ride uphill, it will make every flat feel like you are going up hill to some degree until charged. And if it captures energy as you slow down. that is energy you have already expended. It would be interesting to know the efficiency of motion induced recharge.

highlandboy3 pointless negativity, IMO. Many people like me want a bike for EXERCISE so effort expended is the whole point! As the ‘e’ part can be SWITCHED OFF [which you didn’t notice?] your comment is moot. This is a great looking machine which I can’t afford but plaudits to the designers.

My feelings exactly h boy. Plus no mention of being able to recharge by plugging in option, which should be the case. I tried to take a closer look to see what keeps the belt from coming off the gears. I suspect there’s a spline in the teeth that prevent this. Too bad it’s proprietary cuz you can’t readily take this unit and retrofit it on your favorite frame. If you’ve got a thin build, not too tall and heavy, with a hefty wallet, this Nua may be for you. Otherwise the battery may be too small.

First a 160-watt-hour battery will likely not do 20 miles. Other ebikes with almost 4x the battery capacity are only optimistically rated for 2.5x the range. It’s probably generous to give it 13 miles of range. Secondly it’s bad for battery chemistry to be fully depleted to it’s useful to have a larger battery and not have to fully cycle it. Lastly I agree with highlandboy about regenerating energy while peddling being a generally bad idea. That just means like it will always feel like you are riding in sand or going up hill even when you aren’t. It’s the opposite of what ebikes are for. There are always efficiency losses and you recoup much less energy than you probably expect by peddling against the regenerative system. I do like regen systems as an alternative to using the brakes. It takes an hour on a stationary bicycle to generate a little over a penny worth of an electricity (100 watts) and that’s using all your energy not just a portion of it. Leeching 1/3 of your energy on a flat surface you would peddle for 3 hours to make 100 watts (a penny worth) of power. The only argument for doing that over just plugging it in is if you think non-ebikes are too easy and want the ride to be harder. It’s the opposite of what most ebikes do. As batteries get cheaper and ebikes are starting to ship with 1000 or more watt-hour batteries I think something like this will continue to make less sense going forward.

Gadgets like this are mainly for the people with more dollars than sense. When I throw my leg over the saddle of my bike, it’s to get some good exercise and enjoy the outdoors, not to commute to work or look chic. Of course I keep the tires pumped up firm to minimize the effort needed to go any given distance, as I don’t ride much these days, being so busy with my work projects, and there’s no need to make it even harder than it needs to be to burn off some extra calories!

I like it! I’m glad someone is making assist with a slope sensor. Ideally I want a bike that makes the hills disappear without me constantly adjusting things. The part about sips a bit of power while pedaling on the flat is concerning, but I suppose if you don’t have easy access to charging it’s an interesting idea. Basically storing power slowly over a long period so it’s available in small bursts when you need it.

No mention of whether or not you can plug it in to charge the battery. If you can’t I’m not interested.

The SM (sales and marketing) lie of self charging seems to have spilled over into bicycles here. With cars, the lie covers up the fact that self charging vehicles use a gas engine to charge the batteries. With bikes, it’s the rider. Then there’s regenerative braking so we could say that any device, car or bike, that does that is also self charging self charging. what a bunch of hippie dippy phoney baloney I’ve got a perpetual motion machine to sell you. It’s self charging.

Folks are still having a hard time defining ebikes and their mission profile years on now. You’re supposed to get some exercise on them. You’re supposed to ride them to work without arriving sweaty. Look at those lazy slobs on ebikes says the weekend racer,( I’ve heard that more than once). They’re power-assisted bicycles, they’re electric motorcycle/moped cross-overs, exercise devices, green transpo. Endless possibilities with no right nor wrongs. Truth is, there’s never been anything like them and I want one! Just not this crazy overpriced-yet-again ebike. Sorry. No charge port as someone mentioned. A drag during normal pedaling for charging? No thanks for me but for others. go for it! I’ll get my exercise some other way. I wonder about battery lion/lipo safety and or longevity wrapped around a hot electric motor. Battery replacement cant be an easy thing either. I get it though. it’s stealth.

I like the idea of this bike and while there may be a few shortcomings, what stops me is the price tag. For the 4,500 USD (6,071.85 CAD) plus tax, I can pick up a nice new Honda Monkey bike, Honda Cub or a Grom and still have way over a grand in my

stealth, electric, bikes

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