For some riders, the T-Motion can wander a little too much during climbing and technical traversing and steep terrain riding. These limiters stabilize and settle the T-motion down just enough to create a predictable and dependable attitude when the machine is being pushed to the limits. These small turned Delrin parts limit the T-Motion movement up to 90%. For the full on backcountry technical terrain rider who needs their Ski Doo to maintain a solid edge all the time, this is your solution. Turned parts install on each side of the swivel ball. This kit includes 4 sets so you will be able to install new limiters when you notice the parts are starting to wear. Depending on your riding, the limiters will last about 350-500 miles. This is a very low cost option to fine tune your machines rear suspension for the rider who needs a little more control. Easy to install and no modification is necessary.