Going fat isnt just a fun way to ride its a ride revolution. The security & control that the wheel system found on our Fatboy provides is unparalleled. You get dramatically more traction grip & floatation than with traditional mountain tyres all without sacrificing 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 list of components that are low-maintenance & eager to perform season after season. Have more fun go fat. 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.A FACT carbon fibre fork provides tons of compliance & absorbs chatter while simultaneously keeping the overall weight of the bike down. 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&34; 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. Our Stout XC Pro one-by crankset features a forged alloy construction that provides plenty of security from chain drop while also leading the way for an efficient lightweight & simplified drivetrain with plenty of gear range for hard drives on the flats & climbs. 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 FACT carbon full monocoque tapered steerer 135mm hub spacing open QR dropouts HEADSET 1-1/8&34; upper 1-1/2&34; lower threadless Campy style cartridge bearings STEM Specialized Stout XC 3D forged alloy 4-bolt 6-degree rise anti-corrosion hardware HANDLEBARS Specialized Stout double-butted 6061 alloy 9-degree backsweep 5-degree upsweep 15mm rise 31.8mm GRIPS Specialized Sip Grip light lock-on half-waffle S/M: regular thickness L/XL: XL thickness FRONT BRAKE Tektro Gemini hydraulic disc resin pads I-spec compatible REAR BRAKE Tektro Gemini hydraulic disc resin pads I-spec compatible BRAKE LEVERS Tektro Gemini hydraulic reach adjust I-spec compatible REAR DERAILLEUR SRAM X7 Type 2.1 10-speed long cage SHIFT LEVERS SRAM X7 10-speed trigger CASSETTE Custom Sunrace wide range 10-speed 11-40t CHAIN KMC X10L 10-speed w/ reusable Missing Link CRANKSET Specialized Stout XC Pro forged alloy 30mm alloy spindle 100mm spindle width 28T 76mm BCD spider BOTTOM BRACKET Samox PF30 sealed cartridge PEDALS Nylon 1 pc. body 9/16&34; 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 120TPI folding bead 26x 4.6&34;REAR TYRE Specialized Ground Control Fat 120TPI folding bead 26x 4.6&34;INNER TUBES Standard Presta valve SADDLE Body Geometry Henge Sport steel rails 143mm SEATPOST Alloy 2-bolt 12.5mm offset 30.9mm anti-corrosion hardware SEAT BINDER Alloy 31.8mm