Coil spring system with internal preload capability Oil damping with preset rebound and compression settings Threadless steel steerer with 28mm 4130 CrMo steel stanchions fixed to a forged 6061-T6 aluminum crown 1-piece aluminum lower legs with 9x100mm quick-release dropouts, rim brake and disc brake compatible (74mm Post-Mount): max 165mm rotor / 2.5" tire