An oversized access hole and soft plug for easy access to the slipper clutch nut while still maintaining an unmatched seal of the gear mesh area. More clearance for larger pinions for owners hungry for speed. Retains all stock geometry for easy bolt up; no cutting or gluing required. Completely sealed Stock gear covers have a large open gap between the spur gear and the out-drive that allows gear destroying dirt to enter. Sleek contours that would look great on any vehicle.