We have a MX5800. We installed Pat's quick connect system, using their option that fits the Class 2 MX lift-arm size and reduces it to a Class 1 o the hook-up end. We did this because all of our implements/attachments are Class 1. This set-up works great for us. If we ever want to go to Class 2--which is doubtful--we will use the bushings referred to above.