If having fun for the sake of having fun sounds appealing to you "going fat" will change the way you ride forever. The security & control that the wheel system found here on our Fatboy SE provides is unparalleled. You get dramatically more traction grip & floatation than with traditional mountain tyres all without sacrificing much to climbing efficiency. The end result is easy to explainyou have way more fun. & to make sure of it we built the Fatboy with a durable no-nonsense list of components that are low-maintenance & eager to perform season after season. The frame features an M4 alloy construction that provides the ideal blend of efficiency & durability while the geometry creates a roomy top tube & short chainstays for easy climbing & confident descending. Our alloy fork with air-formed legs is lightweight & pairs up perfectly with the fat wheel system to soak up trail chatter & bumps. Our Stout XC 90 alloy rims have been laced to Stout XC hubs to form a wheelset thats dependable rugged & efficient. So whether youre trail riding or ploughing through the snow these wheels will be the perfect mix of performance & strength.26x.4.6" Ground Control tyres help soak up bumps while also providing a game-changing level of traction control & floatation for better handling out in the wild. A custom Samox 2x 10 crankset features an alloy construction to provide a crankset that offers up strength durability & plenty of gear range for climbing. Technical Specifications FRAME Specialized M4 Premium Aluminium fully-butted w/ smooth welds tapered head tube post-mount disc dropouts 190mm rear hub spacing replaceable alloy derailleur hanger FORK Specialized alloy air-formed legs tapered alloy steerer 135mm hub spacing open QR dropouts HEADSET 1-1/8" upper 1-1/2" lower threadless Campy style cartridge bearings STEM Specialized Stout 3D forged alloy 4-bolt 6-degree rise anti-corrosion hardware HANDLEBARS Specialized Stout XC double-butted 6061 alloy 9-degree backsweep 5-degree upsweep 15mm rise 31.8mm GRIPS Specialized Body Geometry XCT Contour Kraton w/ gel lock-on FRONT BRAKE Tektro Aries mechanical disc organic pads REAR BRAKE Tektro Aries mechanical disc organic pads BRAKE LEVERS Tektro mechanical disc FRONT DERAILLEUR SRAM X5 2x 10 low direct mount REAR DERAILLEUR SRAM X5 10-speed long cage SHIFT LEVERS SRAM X5 2x 10 trigger CASSETTE Sunrace 10-speed 11-36t CHAIN KMC X10 10-speed w/ reusable Missing Link CRANKSET Specialized Stout XC forged alloy 2x 10 PF30 Cr-Mo spindle 36/22T 104mm BCD spider BOTTOM BRACKET Samox PF30 sealed cartridge PEDALS Nylon 1 pc. body 9/16" w/ reflectors RIMS Specialized Stout XC 90 disc alloy single wall 90mm wide sleeve joint hookless design 32h FRONT HUB Specialized Stout XC 135 Hi Lo disc alloy sealed cartridge bearings QR 32h REAR HUB Specialized Stout XC 190 Hi Lo disc alloy sealed cartridge bearings QR 32h SPOKES Stainless 14g black FRONT TYRE Specialized Ground Control Fat 60TPI wire bead 26x 4.6"REAR TYRE Specialized Ground Control Fat 60TPI wire bead 26x 4.6"INNER TUBES Standard Presta valve SADDLE Body Geometry mountain steel rails 143mm SEATPOST Alloy 2-bolt micro-adjust 12.5mm offset 27.2mm SEAT BINDER Alloy 31.8mm