We are getting ready to ride the "five miles of hell" this fall here in Utah. I've ridden it on a XR250R but am planning or taking my BRP over it this time. This trail is one of the toughest I've ever ridden and it can destroy a rider and bike in no time. I need to find a 12 tooth countershaft sprocket so that we are geared down. I've tried several sources but haven't been able to find one. There are several stores that have a 13 tooth but no 12. Anyone out there know of a place?