Hot Wheels/TYCO X-Treme Motocross Electric Stunt Bike Motorcycle Slot Car Set. If you have any questions please message. THE BIKES ARE BOTH TESTED AND WORKING! All the track pieces are present. I compared to the instructions to count the track pieces. I have never built this track. It was purchased 2nd hand and I just have not had the time. The bikes were battery tested and are both running fine. Sold as is.