electric motors and barrerys

except for that shape it looks like a pretty standard hub motor and lithium battery pack. some of the others around here can give you the specifics. I would guess it was either 48 or 60 volts though if it is high performance.

Hi DannyBoy - If you are interested in high-performance ebikes, I would suggest that you do some research over on Endless-sphere.com. Probably start with the ebike general discussion page - Endless-sphere.com • View forum - E-Bike General Discussion. While of course you can spend as much as you want, you might find you can build an RC powered bike that will be at least competitive with that one for less money, and you'll have more fun doing it - jd

The Stealth is practically a motorcycle with 4500 watts.
You could add a 1000W hub motor to a used full suspension and save a lot of sterling. Build a battery box from plywood to fit within the front frame triangle and protect your batteries (its tough to ride trails with batteries mounted high on a cargo rack). You can cover the plywood with padded vinyl (like the dash of a sports car).

Your Premier League team will be visiting Houston soon to play our MLS team at Reliant Stadium. Cheers

You can buy performance bike for much less money, with better performance (it looks different) in Croatia , for example. Or , if you want to put it together yourself, you can buy Crystalyte 53xx motor over volt it to 96 V nominal, some Kelly controller about 100 A + and Headway LiFePO4 batteries. Full suspension is needed on the bike. It will go 50 miles/h +. You'll need a performance forks and rims and tires too and don't forget the brakes. You are looking at around 1500 pounds , bike and mechanical parts not included. Only fabrication that you'll need to do is box for batteries and controller (depends on a bike design and your personal preferences). Also , you'll need to take care of additional cooling for controller , and maybe motor(few heat sink fins).
There are many variations and ideas about performance bikes , so it'll be very useful to visit the forum that JDC proposed. Cheers

Here are a couple of suspended bikes from the sphere.
Endless-sphere.com • View topic - Adrian's 2nd Build - Giant AC Full Suspension