New to the Growler Limited Edition Series. A brilliant combination of speed and durability. The Limited Edition Growler Nitro Stout Christmas Ale brings the best option of the Nitro Stout into an affordable workhorse. Upgraded Terrene Cake Eater 27.5x4.5" with the all new Manitou Mastodon fork makes this bike a trail slayer in any condition. SRAM NX Eagle 1x12 delivers a 500% gear ratio to conquer even the steepest of slopes and the amazing Manitou Mastodon fork designed for superior riding comfort for the every day trail rider. This high performance Growler Limited Edition Christmas Ale fat bike combines only the best offerings from the Growler Nitro Stout lineup and molds it into an affordable custom light weight carbon fat bike. The Growler Nitro Stout is laid out with a raw carbon look with multiple logo color options. Limited Edition = Limited Stock.