When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I understand you have questions regarding the 9310 material used in the wave trac. I called Wavetrac and the response that I got was that they are heat treated differently than ring and pinions and the 9310 gears works best for the friction that they need to work correctly. They worked at this for a long time and they are confident that the gears are plenty strong otherwise they would have not put a lifetime warranty on the unit. I hope that helps to answer your questions regarding the 9310 material.