Here's a Great Start to your Fat Bike build project. This gets you going with a high quality Aluminum frame, fork, stem, headset, seatpost and seatpost clamp.Here are the details on the frame: ALLOY 6061 FRAME, W/DISC MOUNT ONLY, TIG WELD, replaceable rear derailleur hanger, H2O bosses, Rear Rack Seatstay Brazeons, 170mm symmetrical rear spacing, The fork is a 26" CrMo FatBike w/Threadless steerer 1.125". This frame will accept 26 x 4.0 tires.