Bosch’s flagship mountain bike system uses a mini drive ring with internal gearing to send its power to the drivetrain. There’s some resistance in the system over 25km/h, but when you first press down on the pedals there’s an impressive surge of power, and it offers good support over a wide cadence range. Its size has an impact on the width of the cranks (the Q-factor) as well as the chainstay length of the frame, and it’s not the lightest system on the market at 4kg for the motor. On the other hand, Bosch is the most established player on the market, and its system has proven itself over many years.

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Our testers were a little underwhelmed by a couple of our competitors. The Rocky Mountain Instinct Powerplay Alloy 50 has loads of potential with excellent geometry and trail smoothing rear suspension, but the spec of a wimpy fork and non-aggressive tires detract from its downhill confidence when the going gets steep or rough. The Trek Powerfly 7 FS was our least favorite e-bike to ride downhill, with an even less impressive component specification that held it back and didn't inspire confidence on descents.
The bike looks a no different than a regular mountain bike. The 36 V, 8Ah Li-Ion battery is very cleverly designed and disguised as a thermos, so you will not be able to tell whether this is an e-bicycle or a regular one unless you get really close. It is very nicely build, and pretty sturdy; the frame is 100% alloy and the front fork is made with high-grade carbon steel. The bike itself weighs about 45 lbs.

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Even with cheaper or heavier bikes, once you accept that you are really meant to pedal gently and let the motor do the work, non-speed freaks will get into it. E-bikes are great for commuting and for places that aren't pancake flat. They'll pull you away from the lights quickly, iron out hills and stop you getting sweaty, so you can bin the Lycra and ride in jeans, a suit, or a winter coat.
With 170mm travel, aggressive angles and Shimano’s superbly calibrated STEPS motor, the Focus Sam2 is an enduro bike with a built-in shuttle. With the bolt on TEC pack you really can climb to new heights, but without it the smaller capacity internal battery means you need to be ultra economical with your energy use. It’s also frustrating that the internal battery can’t be removed easily for charging. By far the biggest frustration with the Jam2 though is that the sizing isn’t very generous and standover clearance is limited. It’s still a great e-bike, but when you’re spending this much money, you can afford to be fussy.

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The downhill performance is our most highly weighted rating metric because we feel that the most important element of an e-bike is how well it performs out on the trail, especially when bombing down the hill. Each tester rode every bike numerous times and formulated their own opinions of each model, considering how factors like the component spec, geometry, and frame design play a role in its downhill performance. All of the e-bikes we tested were fun to ride, way more fun than any of our non-e-bike riding test team ever expected, but they all had a different demeanor and trail manners. To test this, we rode the bikes downhill, a lot, and took them down a variety of terrain, from fast and flowing open trails to tight low-speed technical, and everything in between.

The bikes we tested all use a different e-bike motor system, and the controls, the primary user interface, are an important element we rated but didn't weight as heavily as some of the others. Each motor system and its associated controls are slightly different. Our primary interest is in how user-friendly is it to interact with the system, how intuitive and ergonomic are the shifters, how good and easy to read is the display, and how easy is it to charge the battery? Each drive system also has a smartphone app that is intended to allow the user to fine-tune the motor's support settings, create custom settings, monitor battery charge and health, and a whole lot more. We don't feel the apps are necessary for the use of any of these e-MTB's, but those with an affinity for technology or personalizing your ride may be inclined to use them.


Great bike, especially for the price. After a few minor glitches, but working with an excellent customer service rep from Amazon, Gregg, we received the bike (basket had to be shipped later, it didn't come with it originally but all worked out well). I've used this several times, speed reaches 25 mph, powerful bike, can't believe the price. Easy to handle, I have no problems whatsoever with the kickstand but if it has to be physically carried, I let my husband do it, but as for getting it off the kickstand or back on, I have no issues. The only thing I didn't like was the seat, I found it to be uncomfortable so switched seats and bought a great sheepskin cover on Amazon for it. I don't know how long the charge will last, I've only used it a few miles at a time but no loss of power ... full review

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The major reason I want a lightweight e-bike is so that I can largely ride it as a regular bike and only occasionally use the assist and so that I won’t notice quite so much when the battery runs out of juice going up a hill. Other reasons I want a lightweight e-bike: so that I can easily lift it onto the bus bike rack; so that I can hang the front tire on the bike hooks in our light rail trains; so that I can put it on a car rack; so that I can occasionally carry it up stairs.

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To help the rider find the perfect fit, the stem is adjustable. The bike also boasts dynamo powered lights alongside hydraulic disc brakes. The bike will suit riders from 4 ft 10 to 6 ft 5, and also integrates with a child seat. The total weight is 22.5kg, making it admittedly a fairly hefty folder – but that’s fairly uniform across electric versions.
The Merax bike is a sturdy, basic bike for those who want nothing more than a couple of wheels capable to roll over rough ground for a budget price. 36V 8.8Ah Li-ion battery is conveniently placed for easy access and charging, but it is also removable and securely locked by key. Convenient placement. It takes 6-8 hours to charge the battery from 0%-100%, and you can expect to travel up to 22–28 miles on a full charge.

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Fat bikes are the go-to machine in the world of mountain biking. It adds spice to the fat biking experience if it’s an e-fat bike. The Cyrusher XF800 is an impressive e-fat bike that is equipped with top-notch features. With a bombproof build and discreetly housed battery, the XF800 provides all-day action. It can take absolute beatings uphill or down with the beefed-up components.
The new and improved version of the very popular Cyclamatic Power Plus series, the CX1, stands out with its elegant design. Glossy silver finish and sleek lines of the frame make this e-bike look much more expensive than it actually costs. But besides its look, the designers of this electric bike have also focused on the convenience. Everything, from ergonomic design to easily removable battery, is created to give the rider an awesome experience. Improvements are made in motor and the battery as well, and the bike is now equipped with the 21-speed gear system.

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The Goplus electric mountain bike is a perfect bike for all kind of outdoors. It has an eye-catching 26” x 4.0” fat tires, which helps you to ride on every surface, even snow or sand easily. The Goplus electric mountain bike has a 36V 10AH lithium battery. After recharging the battery for 4-5 hours, you can comfortably ride a bike for 20 miles at 12.5 km/h speed. This stylish bike provides powerful riding. Also, The Goplus electric bike has three modes to choose from: pure electric mode, assist and throttle – riding without pedaling. If you are looking for a style and power at the same time – this bike is for you.

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Well done! I started using hub motor 2 years ago when snow was killing my knees I am just a baby at 49pine years old. I asked my lbs guru why my knees were getting sore and he said you need to take a few days off. That was not an option so now I comute to work every day on e-bike and can still rip it up on the weekends with mykids on specialized pitch regular pedal power.I know the day will come when I need help on weekends to.

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Yukon Trails Outback Electric Mountain Bike is an affordable urban bike with a 24 volt motor of 250 watts. The lead-acid battery of 10 AH offers 28 miles in a charge. This mountain bike is manufactured in China. The bike has the solid tires of 1.75 Watt and 24 inches. It reaches up to the speed of 15 MPH due to the rim of 24 inches. You can smoothly ride the bike while enjoying the fresh air. The seat is comfortable to sit for a long time.
In the end, the Specialized Turbo Levo Comp proved to be the tester favorite, offering the most versatile downhill performance that felt the "most like a mountain bike" that the other models couldn't match. The Specialized proved to be the most nimble and agile by far, yet still managed to be confident and stable at speed. We were also thoroughly impressed by the versatility and confidence-inspiring manners of our Best Buy winner, the Giant Trance E+ 2 Pro. The Trance's modern geometry and quality component spec are the primary factors that help it outperform some of the competition. The Bulls E-Stream has a more one dimensional downhill performance, a stable and planted feel that absolutely charges downhill and excels as the speeds increase.

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Achesin electric mountain bike is designed with an ergonomic design that makes it very stable and easy to ride. Like most of the mountain bikes, this one is built with a good double-layered aluminum alloy wheel which makes it easy to maneuver, lightweight and durable. With its powerful motor and battery system, you can easily cover between 25 to 50 kilometers depending on the nature of the terrain.
160-WH of LiPo $5,500. This bike uses the legendary Gruber Assist motor which is built into the seat post which is the stealthiest ebike set up imaginable. Almost no way to tell the above bike is an electric bike except for its push button accelerator (which also can be hidden). The Gruber Assist is so stealthy that it is suspected of being used as a cheating device in a big bicycle race. Read our article on the Gruber Assist.
This thing is also kitted out with a full SRAM groupset, RockShox Yari RC front shocks, Custom Fox Float suspension at the rear and enormously punchy SRAM disc brakes at the front and rear. Fundamentally, it's a mighty off-road machine with pro-spec kit that introduces a new style of trail riding, allowing adrenaline junkies to ride further, climb harder and descend faster than ever before.
Surprised by the 3 year votes -- I am hoping for more years than that! My friend has his old bike with a BionX kit that he uses every day that's 7 years old without any problem. I expect to change the battery after a few years but that's it -- my thinking is that I will get tired of the bike (wanting new tech) before the bike gets tired of me! Buy a good product and you should be fine for years to come.

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You can take it to anywhere you like as the bike is perfect for exploring wild trails, discovering the nooks of city streets, and daily commute. The motor produces no noise, so there is no way to disrupt the tranquility of natural trails. The more than 4-inch wide fat tires will roll over even on snowy and sandy tracks. The width of the tires and the full-suspension design will cushion the paths for you and help to cruise through the climbs and bomb down the descents.

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While it was agile and quicker handling, the Specialized Turbo Levo Comp lost ground in this rating metric due to the somewhat abrupt pedal assist cutoff that occurred the moment you stop pedaling. This abrupt power cutoff caused awkward moves in slower technical uphill sections when jockeying pedals to avoid rock strikes. The Bulls E-Stream had power for days and could mash its way up just about anything, but its overall weight and size made it a little more awkward in slower or more technical sections of climbing. The Trek Powerfly had a long wheelbase, reach, and chainstay length, giving the bike a long rear end that kept impressive traction while climbing as long as you kept your momentum, the overall length of the bike, however, made it a little tougher to negotiate in the tighter stuff.
The adjustable front shock offers smooth cushioning and buffers the jerks when cycling on uneven surfaces. However, the rear shock is rigid and hard to move. The Shimano 21-gear shifters will allow you to enjoy great speed with a maximum of 20mph. But, it would be better to have at least 24 gears at that speed, because you will feel almost no resistance when cycling at the max speed in the highest gear.

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A quality battery pack made from authentic name-brand 18650-format cells should last for over 1000 charge and dis-charge cycles. If you drain your battery pack once a week, then your pack should last over 3 years. However, you might be able to more than double the battery packs life by charging it at a lower (slower) charge rate (3A instead of the faster 5A or 7A), and also if you only charge the pack to 80% of its maximum voltage.

Having a motor bolted to the bottom of a mountain bike that provides pedal assistance is an amazing leveller. The constant torque it applies to the chain rounds out the squarest of pedalling actions, which in turn helps stabilizes the rear suspension and counter pedal induced bob, seamlessly shifting your focus from pedalling efficiency to battery life.


Prodeco V5 Phantom X Lite 9 Speed Folding Electric Bicycle is a lightweight and well-balanced bike that is suitable for all adventurers, campers, and sports enthusiasts. It gives an outstanding and smooth performance with a 300-watt motor. It is an eye-catching bike that looks fabulous in black color. Plus, you can carry it with you by simply folding it. 

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The extra grip a 50lb e-bike normally helps to prevent overshooting corners when on the brakes, and bring pure DH-bike-like fun factor on the steepest trails. This electric Orange, however, rides more like a ‘standard’ enduro bike with a motor, which could be good or bad, depending on your expectations and riding style. It’s built tough and delivers stacks of fun in less time than any regular bike can. Adding a motor hasn’t upset Orange’s superb geometry.

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The wheels are outfitted with sturdy stainless steel spokes that offer equal parts strength and durability. You can expect to ride up to 27 miles in favorable conditions, including no wind and flat terrain, before needing a recharge. Comes with seven-speed Shimano gears along with front and rear mud guards, a water bottle holder, and a bell and reflectors.
A: Electric bikes are designed with compact electric motors which are usually attached to the back of the front wheel and housed in a hub. There are a number of controls with a user interface which is where all the motor operation is done by the rider. Here one can control the speed, braking and other things such as battery management. Some e-bikes have other electric components such as a sensor which also help in geometry and stabilization.

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Yes, financing is available for every QuietKat electric mountain bike. We’ve partnered with Klarna to offer you flexible financing options that let you pay for your purchase over time when approved. Simply add items to your cart, proceed to checkout, and after filling out your billing address and credit card information, select the Klarna Slice It option. You’ll know whether you’re approved in seconds and can then complete your purchase.

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The Brose motor puts out 250 watts nominally, and can peak up to a max of 460 watts. That’s around half what the 2016 Specialized Turbo S road bike we tested last year develops, but that bike’s much-larger motor sits in the rear hub, which would massively compromise performance on a full-suspension mountain bike like this one. Spend up to the Expert or S-Works spec Turbo Levo and you get a motor that can peak up to 530 watts. 

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However, Emu sells a little foldable number if that's your bag. The Emu Crossbar is for  town commuters that require a sweet ride that's backed up by solid Shimano Nexus hub gears and Tektro brakes, which are adequate if not the best on the market. Riding is smooth and easy, with the crank moving sensor doing its best to iron out any gaps in power delivery.


This was a problem that Schiltknect pondered constantly and tinkered with. Electric hub-motors are becoming widely used, but he considered them out of the question because…as a professional electrical engineer, he knew that the lower RPMs of the hubs were not the most efficient way to power any machine, and they were also noticeably heavy. For an E-mountain bike, he knew he wanted high efficiency and minimum weight.

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