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Touring with Ecospeed -- Interview
New for 2012. Advanced lithium tri-metal batteries. Less weight, greater range. 2 year warranty


Check out EcoSpeed in the news.

EcoSpeed Velociraptor™ Intelligent Motor Controller

Climb 30% grades, pull trailers.

Burst speeds over 30 mph,
up to 40 with aero aids*

Lithium tri-metal batteries. Half the weight of LiFePO4!

Electric Drive Systems for Your Bike

EcoSpeed is the leading maker of mid-drive type electric assists for bicycles. Mid-drives give more performance for a given motor and battery weight and, unlike hub motors, don't create drag when you just want to pedal.

We are also the only maker of electric assists that pays attention to the wide variety of bikes and trikes that people ride. Whether you have a high performance road bike, suspended mountain bike, Dutch bakfiet cargo bike, recumbent bike or trike, or even a fully enclosed velomobile, we probably have an assist that will work with your ride. Click one of the buttons below to see what we have for your bike.




go to road bike page go to recumbent bike page go to cargp page

Or get in touch with one of our dealers.

About EcoSpeed

At EcoSpeed, we make high-performance electric bicycle conversion kits. With the patented Electric Mid-Drive kit that we manufacture and now the Electric Mountain Drive, our customers can turn high quality bicycles from other manufacturers into high performance electric-assisted bicycles.

Our electric conversions are made with extreme attention to detail and quality. The systems are designed to compliment the styling of your bike. Parts are CNC machined from 6061-T6 aluminum for rock solid durability and then anodized for sharp appearance and scuff resistance. We use the largest motors the law allows with external controllers to shed heat efficiently and crank out the power reliably.

Electric Mountain Drive™
Electric Mid-Drive™
Velociraptor™, the Back Story
Customer Photos and Video
What our Customers are Saying

The key feature of our Electric Mid-Drive and Mountain Drive is that they drive a bike's chain. This allows the motor to "see" most or all of a bike's gear range. What that means is that performance is radically increased compared to single speed drives such as hub motors. You can climb any hill and go as fast or faster than the law allows -- all with a small and light motor that doesn't detract from pedaling performance.

A bicycle equipped with one of our drives is outrageously fun. Accelerate through the gears like a motorcycle then shut the motor down and cruise in silence holding your speed with the pedals alone.
With our fully decoupled drive systems there's absolutely no motor drag when it's shut off. When you come to a hill touch the throttle again and sail up without ever shifting or slowing your cadence. Fly around corners under power. Just be careful not to strain your cheek muscles from grinning too much.


With the EcoSpeed EMD or EMtnD, a bike has enough performance to match a car in around town driving. That means you can forget about high gas prices -- you can go over 500 miles on a dollars worth of electricity. That's up to 20 times better than an electric car or gas scooter.

Velociraptor Intelligent Motor Controller

After more than 3 years of intense development work EcoSpeed's Velociraptor Intelligent Motor Controller is now used on all of our systems. US made using state of the art power electronics and software based motor control it is the most advanced e-bike controller available today. All of our systems are now shipping with the high performance and high reliability Velociraptor controller.

If you've looked at electric assists from other manufacturers, you might notice that EcoSpeed is different. We don't just buy cheap hub motors from Asia or try to make a one size fits all generic conversion kit.

We design our systems ourselves and make the critical components in the US. Exact Fit Technology™ is our term for electric assist systems that fit your bike exactly, like they were installed at the factory. Advanced US manufacturing lets us do this. We create parts by computer with turnaround times measured in days. If we don't have the proper parts to fit your bike, we can often just make them.

Exact fit means no U-bolts or flat plates that can crush thin walled bicycle frames. Precision machined Exact Fit Technology clamps and brackets spread forces evenly over a wide area to eliminate any possibility of frame damage.

Electric bikes are legally bikes and can be ridden in bike lanes and on bike trails in most locations. That means big safety advantages over motorcycles and scooters because you don't have to mix with automobiles. Or, get caught in traffic.


* Legal maximum speeds for electric bicycles vary by jurisdiction. To use these higher speeds, you may need to register your bike as a moped, operate off road only, or stay under the radar, literally. In practice though, in most locations pollution free transport is encouraged and no one seems to notice if you go a bit fast now and then. Just be courteous to other road users and especially pedestrians.