Smooth-running set of wheels for uneven surfaces and long distances to fit the K424 XC . Set of wheels with solid rubber tires and plastic rims, non-marking. Increases ground clearance to 2". With high-quality ball bearings and plug-in axles. Can be retrofitted to any K424 XC without tools and at the touch of a button. Can be retrofitted at any time. Includes self-adhesive storage bag made from hard-wearing nylon fabric. SKU: 41818