I wanted to include an electric bike that would be ideal for off-road and trail bike touring, and I think the Bulls E-Stream Evo 3 27.5 Plus is it. This hardtail mountain bike would be perfect for bike tourists going out on the trails for a few days. You could conceivably go for a few days without needing to recharge the Brose 650 watt hour battery, so even if your camping in the wilderness with nowhere to recharge for 60-100 miles you would likely be fine on battery life.
This bike is named the GSD because with it you can Get Stuff Done. Twenty-inch wheels keep the center of gravity low so heavy payloads—it's rated up to 400lbs—are easy to balance and a short (for a cargo bike) 70-inch wheelbase, similar to a standard single bike, make the GSD easy to maneuver. Designed with the urban commuter in mind, the bike can easily break down to 60 percent of its original size to fit into the back of a car and the rear rack doubles as a stand that allows it to stand upright to minimize space inside tight apartments. Put two child seats on the back and take the family along, or drop the seat and let you kid take the bike out himself—anyone from 4'10" to 6'5" can ride this bike. Last but not least, the GSD gives you the option of adding a second battery to extend your range up to about 150 miles on a single charge.
But with increased demand and production, as well as technology improvements thanks to advances in the electric car industry, the cost of components like lithium-ion batteries comes down, Weinert explains. Now, e-bikes are on the market as low as around $1,200 (like the Monroe 250 from Schwinn, available in November 2017). Plus, the competition is stiff. “There are more brands producing than there were five years ago, and they all have to be competitive," LaLonde says.
Because the power is applied through the chain and sprocket, power is typically limited to around 250–500 watts to protect against fast wear on the drivetrain. An electric mid-drive combined with an internal gear hub at the back hub may require care due to the lack of a clutch mechanism to soften the shock to the gears at the moment of re-engagement. A continuously variable transmission or a fully automatic internal gear hub may reduce the shocks due to the viscosity of oils used for liquid coupling instead of the mechanical couplings of the conventional internal gear hubs.

Known for not only their powerful line of mountain bikes and specialty bikes—cruisers to fat—Bulls also has a versatile line of urban models. The Cross E Wave comes as one of their more affordable options at roughly $2,800, but at 20 mph can still range for up to 134 in optimal conditions with everything you’d expect (fenders, lock, lights and adjustability). The entire family of Bulls e-bikes has specifications built for any scenario.


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.
The downside to this mountain-bike build and specification is obviously the weight, at 24.5kg the Trekking feels heavier than the other bikes on test, and rightly bills itself as suitable for heavier riders, too. As with the other bikes here, this is only really a problem for smaller riders, or riders needing to take the bike up or down steps regularly. With its bomb-proof build, full guards and heavy-duty rack, the Haibike is the perfect choice for a burly rider or for doomsday preppers, ready to out ride the apocalypse.
One of the biggest misconceptions about e-bikes is that you're not actually doing any work when you ride one. Not true. Thanks to that battery-powered motor, E-bikes are heavy! So if you turn the assist mode to low or off, you're still putting in plenty of effort. Many commuters have found that traveling home from work with assist off (when they're not in as big of a rush and don't mind getting sweaty) is a great way to fit exercise into a busy schedule.
Stark Drive has always included a front head light by default at no charge for safety with the rear brake light being optional for those who needed this. Now we have reconfigured the homepage so that the rear headlight options i clearly visible and availble without needing to compllicate matters by adding it from our accessories page. We highly recommend a rear brake light no matter what motor you choose for Stark Drive.
Fast and fun on the trail, the SDURO HardNine handles rough terrain with ease, while its large tires roll over most obstacles without missing a beat. The pedal assist makes for quick, energy-saving climbing and the bike descends surprisingly well, too. Its front suspension provides a nice level of cushion on bumpy trails and while we missed having a full-suspension on this model, that would have added additional weight and costs.
As electric bike options continue to expand, more brands are integrating the battery more seamlessly. That makes them look sleeker (and more like a real bike). Batteries are expensive, so make sure there's a good way lock the battery to your bike if you'll be keeping it outside. Overall weight is important. Some battery and motors can add 15 pounds or more to the bike. With assist, you won't feel that much when you're riding, but you will if you have to carry your bike up stairs or lift it onto a bike rack.
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