BLV10385: 2-Speed PTO KitThe two speed PTO kit adds a (540E) gear ratio that spins the rear PTO shaft at the desired 540 rpm while allowing a lower engine rpm. In the 540 position it requires around 2600 engine rpm while the 540E position requires around 1700 engine rpm. This is useful for jobs in which the rear implement does not require max PTO power from the tractor. Fuel Efficient: This kit helps operators save on fuel while also reducing noise. Compatibility: Fits 4044R,