The motor is all there, little or no engine braking , and it looks like its going to last. Destry Abbott told me he has over 90 hard hours on his practice bike. Johnny his mech just tore it done and ended up just putting rings in it the vavles were right at specs. thats trully impressive... the gears might be a little off but I found that a 49 on back helps. As for the shock it needs revalved it rides down in the stroke stock. as for stearing im a fast novice in the desert and a real hack on the track but I had a bunch of bikes , 03 yz 250 02 crf450 03 ktm525 04 crf250 and rode all the others and this bike stock turns great. All the bike have some problem areas , honda with valves, suzuk had some early probs with motors. the yami has some set up issues with stearing. I feel the kawi is really easy and supper fun to ride. Oh and it starts in gear hot every time. Buy on ride it and you will be sold.