One thing that separates these two are their warranties.  Rambo offer a 1 year limited warranty.  While Quietkat offer a 1 year limited warranty on all it's components including the battery, but each frame is covered by a lifetime warranty.  Quietkat have been around longer and are a proven, reliable manufacturer.  They've got it figured out and this year's catalog shows just how good they are.  Rambo is a new, small company with big ambitions and a quality product that they can stand behind.

The e-bike movement has been enjoying a massive popularity boom of late. When bikers are preferring to have a little pedal assistance to everywhere, from the daily commute to cruising through city streets, why not have it too while conquering the mountain trails? You know, just for fun? We have also written a complete guide about the best full suspension mountain bikes.
Our team of experienced testers rode them for weeks on our local trails—everything from flow trails, to technical singletrack, to our enduro courses. We self-shuttled DH runs and hit the bike path. To understand the differences between them, we rode them back to back on similar trails. We tested them against standard bikes on the same trails in the same conditions. And to evaluate their range, we charged them all and ran them on full power until their batteries flickered and died.
Great for fitness and fun Don’t think that eBikes won’t allow for exercise. You still get all the exercise you decide you want.  The more you pedal, they farther yu can go. Plus, it feels great to pedal when it’s so easy to, so most electric bicycle riders actually pedal a lot. Some people even ride eco-friendly bikes as much for fun and staying fit as they do for normal transportation. It’s great knowing that you can head out for a long ride without being concerned that you might tire out and not be able to pedal home. Never a problem! Just let the motor assist lend a helping hand!
…but currently offer only very few advantages, such as a cleaner design and the option to mount a bottle cage in a front triangle. If you want to take a spare battery in your backpack, you will have to struggle with the larger dimensions of the integrated batteries, or you won’t have the possibility to take one with you at all. Depending on the integration, handling the integrated rechargeable battery (e.g. the on-button for Shimano-Intube) can be awkward. Also, the longer battery results in a higher centre of gravity. The fact is that there are good reasons for continuing to use a standard external battery.
The motor is powerful enough to allow you to hit up to 35kmh on a 10.4ah battery that stays alive for 50km. With the fat Kenda tires and suspension fork, the bike does not need any pedal assistance to smoothly roll on even surfaces. The PAS provides five levels of assistance and even the first level is quite powerful. The fifth level will just blow you away with speed and torque and there is no way that you can pedal fast enough to meet any resistance.
In fact, the manufacturers have already proven that what makes an e-MTB outstanding is not that much different to a regular MTB. Sure, there are slight differences in performance due to e-MTB’s heavier frame but both types share almost similar basics covering geometry, sizing, and balance. Also, the power-supplying motor comes into the forefront instead of the suspension in these bikes.
If you are looking for a combination of durability and affordability, then look no further than BackCountry eBikes.  BackCountry eBikes ( aka BAKCOU ) is newer to the electric hunting eBike market but they have done so much for the industry in a short amount of time.  Each bike that they produce is made from the highest quality materials and are more affordable than both Rambo Bikes and QuietKat. 

Specialized has a celebrated history within the mountain biking scene, and they’ve elaborated on their well-rounded catalog with the addition of the Turbo Levo Comp. The Levo is a great alternative for those who are looking for all of the coveted characteristics of a proper trail bike, wrapped up with a slew of new, innovative technologies. Here, you’ll find a similar geometry to the company’s flagship Stumpjumper, albeit, with a redesigned alloy frame, improved kinematics, and internal cable routing to keep things nice and clean. In the bike’s most recent iteration, a Specialized 2.1 Rx trail-tuned motor has been implemented, providing instant engagement, unrivaled heat management, and consistent output throughout the Levo’s entire assisted range. When it comes to peripherals, a set of dependable SRAM accessories, a Praxis 2D cold-forged alloy crankset, and Roval Traverse 29 wheels round things out.
While falling gas prices have temporarily halted years of gains in the number of bicycle commuters, more and more of us are using the bicycle to get around. It’s economical, provides good exercise, and is much cheaper than owning a car. But unless you’re in really good shape, you aren’t going to get very far. Enter the electric bike: a glorious new contraption that lets you get around without having to worry about arriving at your destinations a sweaty mess.
While falling gas prices have temporarily halted years of gains in the number of bicycle commuters, more and more of us are using the bicycle to get around. It’s economical, provides good exercise, and is much cheaper than owning a car. But unless you’re in really good shape, you aren’t going to get very far. Enter the electric bike: a glorious new contraption that lets you get around without having to worry about arriving at your destinations a sweaty mess.
Equipped with a high performance motor, this Ancheer Power Plus electric mountain bike has won accolades for its superior performance and unmatched reliability. It is built with a solid Aluminum alloy frame to keep it strong yet lightweight enough to maneuver with easily. It is everything one would want to get through any terrain and is excellent in every way imaginable.
The Class 3 Aventon Pace 500 urban e-bike has five levels of pedal assist and tops out at 28 mph. But the Pace has something not found on a lot of modern e-bikes. In addition to pedal power, it also has a throttle—in the case of the Pace, a small thumb paddle on the left side of the handlebar next to the control unit that holds a steady 20 mph, no pedaling required. The bike itself has an aluminum frame, a swept-back handlebar, ergo grips, a sturdy kickstand, hydraulic disc brakes, 8-speed Shimano Altus shifting and gearing, 27.5x2.2-inch Kenda e-bike-rated tires, a saddle the size of Texas, and good ol’ classic city/commuter-bike geometry. It doesn’t come equipped with fenders or a rear rack, but you can add them. Power comes in the form of a 500-watt rear-hub motor and a semi-integrated battery on the down tube (with a range of up to 50 miles); a backlit display unit mounted on the stem shows your speed and distance and tells you how much juice you have left.

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, 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.


A stealthy, long travel, all-mountain electric bike with longer wheel base and adjustable seat stay hardware to optimize geometry for climbing and descending, proprietary "Active Braking Pivot" rear suspension reduces skipping, Knock Block headset and Hartzell Hug impact-absorbing downtube bumpers allow for straight downtube. Trek-invented Boost hub spacing improves spoke bracing angle and support for larger plus sized tires,…... Which is the best electric mountain bike?
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