New Orbit Scooter Headsets at the Ripped Knees Scooter Store FSA have been making some outstanding headsets & the MX Orbit is no different Features 118 36 x 36 ACB Froged & CNC machined 6061T6 aluminium cups TH Brand 36 micro angular contact bearings 7075 aluminium crown race Stack height 187 134 321m Spares Top & bottom bearings 1606475 Crown race H6033