Tange Prestige heat-treated butted CrMo steel, butted CrMo rear end Geometry is optimized for 100mm travel 29" forks and will handle 120mm forks IRD Broski Sliding Dropouts allows geared and singlespeed builds with easy wheel removal Boost 12 x 148 thruaxle hub standard (thru-axle included), S-bend seatstays and chainstays, rear rack and fender eyelets 3 pack mount and water bottle mounts on downtube. (LG and XL size have a set of water bottle mounts on the seat tube as well. Seat tube bosses are left off the MD and SM to better fit long dropper posts) ED coating under paint and inside tubes to resist rust CNCmachined 44mm headtube: Will take 1-1/8" steerers with a ZeroStack 44 headset or tapered steerers with a ZS44 upper assembly and external cup (EC44) lower assembly 34.9mm seat collar/73mm bottom bracket (English threads); 400mm+ post(rigid) recommended Recommended tire size: 29" x 2.4" (or 27.5 x 2.8”) Wt: 6.2 lbs. (MD) Figures based on nonspecific 29"x2.2" tires and a 100mm travel fork