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.
It comes with an 8Rib pulley on the tensioner. The 8Rib pulley will work just fine with the 6 rib belt. I am running one at 11 psi and the belt has not gone anywhere.