DVO Suspension Sapphire D1 Boost Fork 27.5" A big and bold fork for the boisterous MTB rider, this Sapphire D1 model by DVO combines a hard-wearing aluminium construction with excellent adjustability, allowing you to take on every trail with confidence, composure and control. Equipped with a Boost-sized axle for enhanced stiffness and handling on the most demanding routes, no journey up, down or across the mountain is too intimidating. Boost-Sized, Trail-Taming MTB ForkThis sturdily-built fork comes complete with six clicks of low-speed compression adjustment and over 30 high-speed adjustments to let you set your suspension to your preference for the route ahead. Supported by Off The Top (OTT) and Advanced Volume Adjust (AVA) settings, as well as 14 clicks of shim stack-controlled damping, every surface is made super smooth to keep you rolling reliably from start to finish. Features: Steerer Material: Aluminium Crown Material: Forged Aluminium Stanchion Material: Aluminium, 35mm Lower Material: Magnesium casting Suspension: Air, OTT adjustment (negative spring preload) Damping:  Closed cartridge bladder system Steerer Diameter:  1 1/8-1.5", tapered Adjustments: High-speed and low-speed compression Shim Stack, rebound, OTT, air pressure Axle to Crown: 565mm Travel: 150mm Axle: 15x110 mm Boost thru axle (bolted) Offset: 42mm Buy DVO Suspension Frames & Forks from Chain Reaction Cycles, the World's Largest Online Bike Store.