Sirrus Specialized Bicycle Kinetic Indoor Trainer with Mat. 24 Speed Shimano with V-Brake, Light weight Aluminum, Milano Seat. 54cm. The originial front tire/rim was lost so I just drove to Twin Falls and bought a new rim, tire & tube. You can see in the photo the front tire is a little larger then the back tire. It cost me $92.17. Selling for $500 cash. As is no return. I live in Wells, NV so please call 775-752-2206, I do come to Elko so give me a call. It's a wonderful bike to ride. It's not just an indoor training bike. Now only $400!