FSA Orbit X Threadless Headset 1" H2086 6.1mm/31.5mm Stack Height ModelNumber=K3647 5 Center to Flange Left

5 Center to Flange Left 34

Black Pair

2 Disc Brake Rotor - 180mm 6-Bolt Silver

37 Spindle Length 108 Spindle Interface Type ISIS Weight 243 BB Shell Width (mm) 68 BB/Frame Interface English

FSA Orbit X Threadless Headset 1" H2086 6.1mm/31.5mm Stack Height ModelNumber=K3647 5 Center to Flange LeftFSA's core line of headsets that have become an industry benchmark\nAll Orbit headsets feature forged and CNC machined 6061 T6 alloy cups Orbit IS, CF, Z, ZS, X, MX, XL II include angular contact bearings Orbit Xtreme Pro include stainless steel industrial cartridge bearings and stainless crown race Orbit UF include lower angular contact bearing and upper 5 32 inch caged bearing Orbit DL include 5 32 inch caged bearings IS: 36x45 degree Cane Creek