Front Rack The Surly Front Rack is adjustable to fit from 26" to 29" wheels, constructed from tubular Chromoly, and has been used on expeditions all over this planet for years. This version here fits on many of our forks (and some other manufacturers&&';; forks as well!). It&&';;s both height adjustable and can fit a wide selection of wheel sizes, allowing you to keep the center of gravity as low as possible for a stable ride. Key Features Tubular CroMoly rack, stainless steel and aluminum hardware Not compatible with 135mm or wider spaced forks Lower plates redesigned to add strength and increase clearance for disc calipers Pannier support area: 121 inches cubed, per side Surface finish: phosphate coated inside and out, powder coated exterior UniCrown plate no longer included, only comes with Lower and Upper plates