via Niner Bikes:
The ONE 9 is a SSS (Single Speed Specific) DS (Disc Only) Niner made from EASTON™ GX2 Scandium tubing custom drawn for Niner bikes.

Everything about this frame was made from scratch including the minimalist 110 gram EBB and the custom single speed specific vertical drop outs. Weight was gouged out of every crevice. Both the head tube and the bottom bracket shell have been internally butted for maximum weight savings and every tube on the frame has been custom drawn and butted to create the lightest frame without compromising strength or stiffness. Weight was an issue when designing the ONE 9, but from the starting gate, ride quality always came first. Could we have made the ONE 9 even lighter? Probably. Would it have the stiffness at the bottom bracket to handle those brutal single speed out of the saddle power mashes that happen so frequently? No.

• 3.3 lb. Niner SingleSpeedSpecific, disc only frame with custom drawn and butted Easton™ Scandium GX2 tubing *weight is for medium frame with EBB
• Super light 110 gram Eccentric Bottom Bracket with Titanium set screws
• Niner specific geometry
• Custom Single speed only drop outs
• Stainless Steel Head Badge
• Internally butted head tube and EBB shell
• S-Bend Seat Stays and Chain Stays for added heel and mud clearance. Frame will accept 2.3” tire
• Requires a 31.6mm post, 400mm length recommended