KizerKnown for high-quality, innovative products, Kizer is the most renowned and longest-running aggressive and urban frame company on the market. Dedicated to research and development, many of the technology skaters rely on began with Kizer including Kizer, UFS aftermarket frames, CNC machines UHMW frames, Freestyle frames, Big wheel frames, and many other products and materials.Shift UnlimitedFlat, Freestyle, and Anti-Rocker frames all have advantages, and with the Kizer Shift Unlimited, you no longer have to pick between them. This revolutionary approach enables skaters to quickly switch different wheel settings based on their demands and skating style.Kizer's Shift Unlimited idea consists of a single base frame skeleton that accommodates three different blocks: a flat block for street, park, and bowl skating; an anti-rocker block that works flawlessly with small anti-rocker wheels (45 to 49mm); and a freestyle block for unrestricted grinds and creativity.Layon Chang / BRA created the design.The Shift Unlimited, which incorporates rocker spacers, allows you to roll on practically any combination of wheel combinations, including:Flat:Bearing bosses rockered UP - Max 55 mm wheelsBearing bosses rockered DOWN - Max 60mm wheelsHilo (rockered UP outside, rockered DOWN inside) - 60 mm outside, 55 mm insideAntirocker/Freestyle:Bearing bosses rockered UP - Max 65 mm wheelsBearing bosses rockered DOWN - Max 68mm wheelsAntirocker/Freestyle with a recess in SoulplatesBearing bosses rockered UP - Max 68 mm wheelsBearing bosses rockered DOWN - Max 76mm wheels