The extreme is an awesome track. Did you get the 16 wide? I put 156 x 16 extreme on my 03 900 mnt cat and now have a hard time keeping the skis from pointing straight up.
Go for a 16" wide maverick or challenger xtreme. I put 156x16x2.5 extreme on stock 03 900 MC way better than stock 151. After one trip added ported cyliders,vforce3s, and twin pipes and wow. passes 900 rmk with 166"
Putting a 156" x 16" x 2.5" Challenger Extreme track on my 03 900 Mountian Cat but should have gone to the longer one. The 16" wide track is definately what makes those doo doos climb as bad as they do.