Yes, 2 new 450's. 450sx 52 rw hp. 400 bottom end with 520 top end. made to rev higher than the new 450exc. this bike has 520 bottom with 400 top end. the 450 will have more low end power due to the lomger stroke. no more 520 sx or exc. only a 525exc. no 250 four stroke untill '05. forks on sx model will have 3 bushings instead of 2 to reduce stiction. do not know if 450sx will be 4 or 6 speed.