The Blix Vika+ is a folding e-bike with a utilitarian execution: At nearly 50 pounds, it’s heavy for its size, and the folding mechanism isn’t as slick as other folding bikes we’ve tested. That said, it does fold into a small package and feels sturdy enough for riding between errands. The geared hub motor is adequately powerful and an included throttle makes it easier to get off the line. A rear rack, front and rear lights, and a kickstand come with the bike—it’s everything you need for zippy urban commuting.
It wasn't all gold stars for the Bulls, however, as the larger battery storage of this bike makes it the heaviest in our test. This heavyweight rig is far from nimble or agile, giving it a more one-dimensional performance on the descents, and hampering its climbing abilities in technical sections or tight corners. Its charging port is also recessed into the frame making it one of the least user-friendly, and while we did like their e-bike controls, they couldn't quite match the ergonomics or display of some of the competition. Overall, we had a blast riding the E-Stream EVO AM 4, read on to find out how it compares.

This ultra-light frame provides greater strength to weight ratio. It makes the bike less cumbersome to carry and robust enough to take a beating on the rough trails. A weatherproof and rustproof finish used on the frame lets the bike retain its new look for longer. Carbon-steel fork provides excellent shock absorption to keep you comfortable on bumpy surfaces.
The Mule 1000 & Storm 1000 both come in 17" and 19" frame size options so you should be able to find the right sixe for you both. The 17" frame is best suited for heights ranging from 5’2" to 5’8" and the 19" frame for 5’8" and above. BackCountry eBikes are the makers or both models you like and they are hunters based out in Ogden Utah and they don’t make average bikes, they focus on elite hunting bikes that will get the job done. They are designed to take a beating a perform well doing so. Both models have that coveted ULTRA mid drive motor so climbing hills and tackling rough terrain offroad will be a joy to experience.
With most ebikes the choice of motor defines aspects of the frame geometry and to a lesser degree the suspension characteristics of the bike. Not with new Rock Mountain Altitude Powerplay. With its bespoke motor Rocky has been able to design an ebike that reflects the ride quality of a highly evolved 150mm trail bike. With instant power pickup, extended battery life and streamline proportions it’s not just the handling of the Rocky that will get you charged up for riding. It’s the best bike in this test by some margin, but we had an issue with the motor momentarily cutting and raising questions over it’s reliability. 

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