I remembered someone having this question and I measured all in put in place in waiting for my 36" ai.
Are you talking about the DuPont Hyfax from Yamaha. They are offering Hyfax for Polaris sleds with inserts. I have ordered a few sets to try.
Edit:from Hauk
NEW Dupont Slides, Now for all sleds, YAMAHA, Polaris, Arctic Cat, BRP Ski Doo.
S•Space-age polymer/composite material
•Stronger than hardened steel, aluminum, or even titanium
•15T scale Rockwell hardness of about 80 (UHMW slide runner hardness rating is about R64)
•Capable of withstanding extreme friction and heat environments
•Pieces are placed at a 45-degree angle across the entire slider for constant contact and even wear
•Made using compression molding process
•Lightweight, yet strong
•Partially made with current UHMW plastic slide runner material