Basically, there is no reason to ride an eMTB with less than 130 mm of travel. With classic bikes, more travel usually means both less efficiency and poorer climbing characteristics, but this is not true with eMTBs – at least not up to a certain point. The best example is the Specialized Turbo Levo, which with its 135 mm of travel at the rear handles much better than most of the other, longer travel bikes in the group test. Also, eMTBs with suspension travel of 180 mm or more are often noticeably less efficient, as clearly exemplified in this test by the Haibike XDURO Nduro. It climbs a lot slower than other bikes using the same motor and the same level of assistance, an experience you will find with almost all other long-travel bikes from other manufacturers. The exception is the BULLS E-CORE EVO EN Di2: in direct comparison, it climbs a lot more efficiently, even though it also offers 180 mm of travel. The ideal compromise between uphill and downhill performance usually lies somewhere between 130 and 160 mm of travel.

The Ultra Mid Drive Bafang motor is the best motor there is and due to it’s high cost most other brands have not adopted it yet. The ‘Ultra’ has torque sensors built in so it knows how much power to give you based on how much pressure you are applying to the pedals, so it intelligently gives you the right amount of power when you need it most and not a predetermined power regardless of what terrain you’re tackling, so you have more control.
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.
The 150mm (fork) and 140mm (shock) suspension allows you to hit double-track ruts without veering from your line and are tuned for the added weight of the motor and battery. That makes the bike easier to handle than a bike this heavy might otherwise. The motor is powerful and torquey meaning you can stay in the lower two assist levels of the five available to save battery and still get enough kick to ascend just slightly faster than on a regular bike. The highest setting really has some oomph, with a little too much power to use on tight or technical trails. It’s better for fire road climbs or cruising on pavement to the trail head or back home after a ride.
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.
I've had the eBike for about a week now and figure it is time to post my impressions. Overall, I am satisfied with the bike, especially based on the price. It has not been without hiccups (see below) but after quite a bit of research online I am convinced for the price, nothing out there will compare. Not five stars based on a few pending issues which will hopefully be resolved. It is not perfect. I have no idea if the more expensive bikes are "perfect", though. I've spent some good time tinkering on this bike making adjustments so far, but that's normal for any new bike.

Addmotor HITHOT is slightly more lightweight than the Addmotor MOTAN model. The range is less but it is still impressive, and it is a bike that is built for slightly lighter riding all round. It is still a great bike, with suspension features and a strongly built frame. This bike has the added safety of front and rear brakes to make sure you can stop when you need to, even if that is at short notice.
There is no suspension, so the fat bike is not ideal for downhill. Also, you will feel more shocks than usual while doing large drops or crossing big tree roots. The fat tires are helpful for keeping it accurate and quick on sand and snow but don’t run it on ice. The tires simply don’t have enough traction to stay steady on ice. Studded tires may solve the problem but the safer option to steer clear of icy tracks. 

"It's nice to have a dropper post, fully-adjustable suspension, and a frame that is well-balanced. The drive system is positioned well and performs incredibly. Trek really dialed in their rear suspension and ABP reduces skipping so the rear wheel track the ground. The removable battery pack with a handle makes this an easy bike to lift, transport, service on the trail, and park securely."
I bought this bike with intended use on my hunting farms. I’ve ridden it now off road several times, and to say I’m blown away, is an understatement. This bike simply blew me away on all fronts. The motor is super strong and pulls me around great. I’m 6’2 210 so I’m not a small guy either. Like others have said, if this thing doesn’t make you smile the first time you ride it, you’re just not a happy person!!!!
The bike has a maximum range of 20 miles before needing to recharge.  Keeping up with speed and battery life is a breeze with the Bafang LCD display that comes standard with this model. A durable aluminum alloy frame helps this bike take a beating and keep on going. The Stalker has an 8-speed transmission and a set of Tekro mechanical disc brakes that will give you full control over the bike. A pair of 20 inch by 4 inch tires will help you climb those steep hills and easily get down those muddy trails. 
Levo Battery Charger is a 4A battery charger. It is better than industry average of 3A chargers but not that impressive neither. I would expect at least in their expensive models such as Men’s S-Works Turbo Levo to see a 6A charger. Anyway it isn’t bad, actually better than what most e-bikes offer. Maybe they can offer a fast charger as an accessory who need to charge their e-bikes several times a day without wasting lot of time.
The Bulls E-Stream EVO AM 4 is a new addition to our electric mountain bike test and it didn't take long for our testers to fall in love with this new contender. This bike comes ready to rumble with a beefy enduro ready build with 150mm of front and rear wheel travel controlled by a stout RockShox Lyrik fork up front. Testers found this bike to come alive at speed with stable and confidence-inspiring trail manners that preferred to go fast, and big 2.8-inch wide Schwalbe tires that provided heaps of traction. Bulls has done a good job designing this beast, with a powerful and smooth Brose drive unit cleanly integrated into the frame along with a large 650Wh battery. The motor lays down very smooth power in all of its output settings and is one of the quietest models we tested. The large battery storage capacity provides the longest distance range of all the models in the test so you can stay out longer and ride farther than on models with smaller batteries. The e-bike controls have relatively good ergonomics and an easy to read display.

Ghost’s Hybride SL AMR X S 7.7+ LC boasts almost as many unique characteristics as its name suggests, offering riders a middle- to high-end platform that’s also the recipient of a Design & Innovation Award for 2019. For those who spend their lives on the rugged trails, the SLAMR is outfitted with a gratuitous 140mm rear suspension, a 160mm RockShox Lyrik RCT3 Dual-Piston Air fork, a modest mixture of dependable SRAM and Shimano peripherals. Like most of the bikes on this list, you’ll find an industry-standard Shimano Steps 8000 motor as the centerpiece, providing lightweight, but capable assistance that helps to shed new light on your favorite trails. When it comes to wheels, you’ll find a set of DT Swiss’ attractive H-series adorning the front and rear, offering strength and resilience to riders who want the best of both worlds, without adding unwarranted weight.
Yes, there are less expensive ebikes on the market but most come with a few serious caveats. The Espin Sport delivers on the full promise of an electric bike, but in a more affordable fashion. This bike isn’t going to tow you around for a 60-mile round-trip endeavor but those seeking their first ebike will get plenty of return on their investment with this model.
We rode the Vado through some of the steepest hills in Palo Alto, and it easily handled everything we threw at it, maintaining a steady 20 miles per hour even on the most daunting of ascents. The bike also handles well downhill and is both nimble and quick on city streets and paved trails. It’s even comfortable to ride for extended distances, which is vitally important for any bike built for urban settings.
You can explore the pleasure of mountain biking with the three levels of pedal assistance – High, Medium, and Low – and you can select them from the handlebar controls. The 21-speed Shimano shifters will help you to dominate various trails but it would be better to have 24 gears because it’s hard to keep up with the pedaling at the 15mph maximum speed.
I've had the eBike for about a week now and figure it is time to post my impressions. Overall, I am satisfied with the bike, especially based on the price. It has not been without hiccups (see below) but after quite a bit of research online I am convinced for the price, nothing out there will compare. Not five stars based on a few pending issues which will hopefully be resolved. It is not perfect. I have no idea if the more expensive bikes are "perfect", though. I've spent some good time tinkering on this bike making adjustments so far, but that's normal for any new bike.
"It's nice to have a dropper post, fully-adjustable suspension, and a frame that is well-balanced. The drive system is positioned well and performs incredibly. Trek really dialed in their rear suspension and ABP reduces skipping so the rear wheel track the ground. The removable battery pack with a handle makes this an easy bike to lift, transport, service on the trail, and park securely."

Mountain biking is all about having fun, right? About getting out there, enjoying the great outdoors, exercising your body and freeing your mind. So what if we told you there was a type of bike that lets you ride further, faster, and have even more fun? One that even made you LOL on the climbs? You’d still have to work for your rewards, but by assisting your efforts, it allowed you to wring every little drop of enjoyment out of your rides. Are electric mountain bikes allowed on trails?

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