In 2004, the very first McCormick MTX135 Tractors went out. They were produced until 2007. Be sure to look for any serial number comments in the part fit notes. In some cases, the McCormick MTX135 Tractor parts you need depend on your serial number. They also have differential hydraulic wet disc brakes. The type IIIN 3-point hitch is very reliable, capable to lift 12945 lbs [5871 kg]. It is used with an electronic lower link draft sensing. It is also worth noting that the independent rear PTO runs at 540/1000 rpms.