1 1/8" (28.6mm) Threadless, CNC manchined, one piece, Cro-moly steerer 100% 4130 Cro-moly, straight legs with external ridge for stifness and strength 9mm Dropouts Unique, DMR designed, reinforced crown and extended steerer Disc brake mount (for 185mm dia. disc) Canti. bosses weight - 1.65kg length- 440mm