Now available from MTNTK Performance are Anti-Ratchet Drivers for both Polaris Belt Drive and Chain-case Models. All Anti-Ratchet Drivers (including these) require you to trim the tip of your suspension rails and add an Anti-Stab Kit because the ex-volute teeth are directly in line with the rails, but the performance cannot be overstated. These will prevent ratcheting of the track in the most extreme cases. High horsepower engines, and longer pitch tracks (such as 3.5 pitch) are harder drive and these are the only ones we have found that will work properly. Choose from the many different Tooth, Pitch, and Drive Shaft options. Sold Per Each - 2 REQUIRED PER SLED - UNLESS YOUR REPLACING A DAMAGED ONE EXACTLY LIKE IT.