Safety First! Add this Genuine Polaris Tether Switch to your Snowmobile for ultimate safety. Stock OEM Plug-in. Comes complete with mounting hardware. This is the only tether we can recommend to use at this time. We have tried many different styles and brands of tether kill switches and they have all failed in less than 5 rides, except this one. After a few close calls we don't think any sled should be driven without a tether switch connected.