The ultimate value in fork mounts, the Prologue delivers a sleek, stylized, and most importantly secure entry level fork mount. Secure locking skewer with new intuitive grasp clamping lever. Sleek and stylized mounting head.Fits all discsuspension combinations with standard 9mm axles. Approved for carbon fiber forks. Dual lock design, locks bike to carrier and carrier to rack. Wheel tray fits tire widths up to 2.6 wide w high profile rims. Carries bicycles with wheelbase up to 48. Fits Thule square, AERO and YakimaR load bars. Thule One Key System compatible.