The Bionic SCS forks are slick and slender, but incredibly strong with a 4-step telescoped shaft, giving strength in the areas that are needed most, and losing material where it isnt. They incorporate the unique nut trap design, that only Sacrifice product have which makes it simple to tighten the axle with just one toolThey also come with easy fit chrome plated, steel spacers, to ensure quick and precise assembly.Spec:Cold forged 6061-T6 AL Shaft length (Above Crown Race): 150mm Shaft Outer Diameter (with shim): 28.5mm (1 1/8) Fork Offset (Rake): 9mm Max Wheel Size: 110mm Weight: 279g (body Only)Features:4 Step telescopic shaft, built in M6 thread, Integrated crown race, nut trap design for single tool assembly, Integrated spacers, M8 high tensile axel, laser etched logo details Spacers for running pegs.