Features: 7.3 inch travel 4 bar rear linkage system for soaking up huge hits and drops Ultra light T-7000 Series Aluminum Seat Post, 31.6 Front Derailleur 34.9 Top Pull Seat Post Clamp 34.9 Bottom Bracket 73mm W/ISCG mount Headset 1 1/8" Rear dropout 12x150mm Available with Marzocchi Roco RC / WC Air or Elka coil over shockSizes: 16.5" and 17.5"