We know that youre particular about how you build-out your dream bike which is why we offer our revolutionary S-Works Enduro FSR 650b as a frameset. Its constructed from our top-tier FACT IS-X 11m carbon fibre to keep the weight down while this material comes with the added benefit of being incredibly stiff. However everything is kept in balance by our nimble 650b Geometrys roomy top tube short chainstays slack head tube & longer wheelbase. To ensure top-level performance on the descents this geo is mated with our exclusive uncompromising 165mm Ã-hlins STX single tube shock with 3rd Chamber air spring technology at the rear. & to ensure that youre in the perfect position for any trail section weve also included our all-new Command Post IRcc dropper with up to 125mm of travel & 10 middle positions. This Enduro gives you the tools—now create your masterpiece.FACT IS-X 11m carbon fibre chassis w/ M5 alloy rear end stands as the pinnacle of lightweight efficient & tough trail performance. Its been built off our 650b Geometry in order to provide an aggressive playful & well-rounded ride. & with internal Command Post IR routing & full cartridge bearing pivots you get a bike thats clean dependable & ready for anything that trail has to offer. The custom Ã-hlins single tube air shock at the rear features high- & low-speed compression as well as low-speed rebound. Youll also find an extra-volume reservoir that allows for more oil which results in more control & an ultra-plush ride quality. Command Post IRcc seatpost features up to 125mm of micro-adjust height adjustability for a more customizable position ultimately resulting in more control & increased handling on both climbs & descents Technical Specifications FRAME FACT IS-X 11m carbon 650b geometry FACT carbon front triangle M5 rear triangle tapered head tube PF30 BB internal Command Post IR routing 142mm dropouts full cartridge bearing pivots replaceable derailleur hanger 165mm travel REAR SHOCK Custom Ã-hlins STX single tube 3rd Chamber air spring technology AUTOSAG compression adjust rebound adjust 215.9x 57.2mm HEADSET 1-1/8" upper 1-1/2" lower threadless Campy style cartridge bearings SEATPOST Command Post IRcc cruiser control technology micro-adjust height adjustable alien head design bottom mount cable routing remote adjust SRL & grip lever 30.9mm S: 100mm travel M/L/XL: 125mm SEAT BINDER Specialized 7050 alloy single bolt 34.9mm