FSA (Full Speed Ahead) -
The FSA Orbit Z headets feature a very low-profile design primarily for ATB and are compatible with Cane Creek internal style headsets. Zero-Stack"/Cane Creek compatible Very low profile designed primarily for Mountain Bikes Patented alignment tip for increased durability and performance TH brand 36 degree Micro Angular Contact Bearings (red seal) 7075 alloy crown race Laser etched aluminum top cap ZS49.57/28.6 (36x45) | ZS49.57/30 (36x45) Color: Black Crown Race: 30 S.H.I.S. Stem Clamp Diameter: 28.6 Threadless Bearing Type: Cartridge S.H.I.S Lower: ZS49 S.H.I.S Upper: ZS49 Defined Color: Black Weight: 89