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15 or 40

  1. T

    16/38 vs 15/40 on my FS550E?

    Wanna get it setup for our track, rode it with 16/38 (stock) for one track day last year and it felt too tall. Initially I was thinking of just going 1 down on the front but if i go 1 down and 2 up I can retain the stock chain length... Will this thing put me on my ***? thanks..
  2. S

    15/40 vs 16/40

    How much of a difference will there be between 15/40 and 16/40 gearing? I currently have 16/40 and bought a 15T C/S sprocket to try. Thanks, Mike