It is concrete, and despite the looks, it's not that harsh or bad for the bike.
I have had the bike for over a week now, at home, and have ran it a lot.
I have driven it in my kitchen (shiny slippery tiles), in my office, one Saturday that no one was there, which has plastic floors and on my roof top (cement, see my video!).
As you know, the bike comes in RTR form, already built, in the colors of Lorenzo's MotoGP Yamaha, but I have read at the site of Kyosho buggy factory racer Cody King that a Honda and a Ducati are planned too! The radio is a pistol type 3-channel and operates at 2.4Ghz.
Mechanically it is very simple. It is not a HOR, of course. The power is transmitted to the rear wheel via a set of gears, inside the left side of the rear swing arm, from a 7400kv brushless motor. Inside the rear wheel lives a coreless motor, which spins at a steady speed and helps stability to the max. You can adjust the speed of the e-gyro via two potentiometers that are on the radio (they are the 3rd channel). When you turn the right one to the left, the bike becomes slow to turn, as if you are getting the Dual Rate number smaller in a 1/5 bike. When you turn the left pot to the left, the e-gyro speed goes slower, the bike -I think- gets a bit faster and the steering becomes a little slower. With both pot's fully turned to the right, you have the most manageable bike for slippery floor or small places. You can drift the bike easily on slippery floors, as we have seen in some videos.
The suspension systems front and rear are very simple: Just springs. No oil, here! However, the spring tension is adjustable in both the rear shock and the forks, so you can alter the ride height. Also, you can alter the steering angle (caster) but you have to take the fairing off the frame, first.
The steering servo lives low in the fairing and directs the forks via a tiny wire. At times you may need to check that the wire is straight and the forks are in line with the bike chassis.
The top speed is very good for the long office halls but may be dangerous in the small places of a home! I predict maybe 30 km/h. Out on the street you can lose it easily. It's so small... a little bigger than a pack of cigarettes!!! At least it's very hard to break it when you hit the furniture or the walls!!!
There is a small box that is a charger and can charge two batteries (one is included with the set) at the same time. The battery is a 1S LiPo, 120mah/20C which is good for continuous running of about 10-12 minutes, regardless of the e-gyro adjustment. You can charge it from a computer USB port in about 12-15 minutes, too. You can also charge it from the transmitter's USB port, but it's not advisable, since the transmitter batteries are four small AAA alkalines and will drain very quickly. I'd like to charge the little battery with my own LiPo charger, but I can't seem to find a suitable plug... So, I charge it only via USB...
Not that this is a problem, anyway!
In the box there is a small 1.5mm allen tool and a small tweezer that is very useful for removing and installing the tiny battery in the fairing!
This is a pre-production model, so the forks are yellow and not gold as promised, and should be when the model hits the shops around April or May.
Its handling is very impressive, the small rubber tires offer extremely good traction everywhere. Of course you can drift it at will, if the floor is slippery, but even so, you are always in control. The e-gyro is so effective, especially with the "slow" settings (both pot's to the right), that you can almost stop the bike and it will stay upright! You just pull the throttle and off it goes again, still upright. If it falls, there are small transparent balls (unfortunately not turning) that help to easily start the bike again. When fallen, you just pull the throttle, not touching the steering and it will do 1/4 of a turn and start running!
The only real problem with this bike is the price.
We are in the rc world and we know what the cost of the small cars in the Mini-Z range is. The cost of the bike will be similar, maybe 10-30 euros less. Even so, we are talking about 200-220 euros for the Greek Market (I hear it will be around 170-200 euros in Europe), which is 150 euros more than what people think this very tiny bike would cost. Everyone thinks it's just a toy, but we know otherwise!
We do know it carries a lot of performance as well as top technology.