2017 Growler Mr. Big Stuff Performance Fat Bike. PRODUCT INFO Frame: Growler Mr. Big Stuff Fork: Growler Aluminum Fork with optional RockShox Bluto 100mm suspension fork Headset: FSA Orbit integrated 1.125 - 1.5in Stem: FSA alloy with 31.8 Clamp Handlebar: FSA 740mm UD Carbon Fiber 1/2” rise/31.8 Brakes: Magura MT5 4 Piston Hydraulic Brakes with 180mm Rotors front and rear Rear derailleur: SRAM GX 1x11, long cage Shift levers: SRAM GX trigger shifters Cassette: SRAM, PG 1030 11-speed, 11-42t Chain: SRAM 1030 11 speed chain Crankset: Raceface Turbine Fat Bike Crank, 190mm spindle with 32T Chain Ring Rims: Sunringle Mulefut SL80 Tubeless installed Front Hub: Sunringle SRC 15x150mm hub Rear Hub: Sunringle SRC 12x197mm hub Front tire: Panaracer Fat B. Nimble, 120TPI, folding bead, 26x4" Rear tire: Panaracer Fat B. Nimble, 120TPI, folding bead, 26x4" Saddle: WTB Volt Comp saddle Grips: Answer Fall Line XC Seatpost: FSA 400mm UD Carbon Fiber Seatpost