The Cru X Pro Carbon Disc frameset is a cross beast with race-optimised geometry OSBB tapered headtube internal cable routing & an outstanding stiffness-to-weight ratio. Build it up with the spec of your choice.> Specialized FACT 10r carbon disc-specific frame w/ OSBB for stiffness & light weight> Specialized FACT carbon disc-specific fork for precise handling & steering> Specialized CG-R FACT carbon seatpost is engineered for compliance & comfort Technical Specifications FRAME Specialized FACT 10r carbon disc-specific 1-3/8" lower bearing OSBBFORK Specialized FACT carbon HEADSET 1-1/8" upper 1-3/8 lower stainless steel cartridge bearings 8mm carbon cone spacer w/ 25mm of carbon spacers BOTTOM BRACKET Hope BB30SEATPOST Specialized CG-R FACT carbon single bolt 27.2mm SEAT BINDER Alloy 32.6mm