These wheel spacer kits allow you to widen your RZR for more stability when running high speed tight trails/roads or crawling over the nastiest rock piles. It does so by giving you an additional 1 3/4" width per side (3 1/2" overall). They are manufactured from high quality billet aluminum and are precision CNC machined to ensure perfect fit and proper balance. These wheel Spacers can be used on most RZR models with some limitations based on wheel offset and tire size, see our recommendations below. Simple bolt on installation with no permanent modifications Sold per pair. 1 3/4" Wheel Spacers. Larger tires and offset wheels can be used, however, some further modifications such as fender trimming or lift kits may be necessary for proper clearance depending on the model. These spacers can also be used for extra width on the XP 900/1000, 900 S, XC and 900/1000 RZR-4 models. Wheel spacers on 50" 900 models will only fit up to a maximum tire size of 29"