Jims 6-Speed Cruise Drive Heavy-Duty Trap Door Upgrade Kit For Harley Designed for performance-driven applications, the upgrade kit provides reliable positive shifting and maintains shaft center line integrity. It ensures optimal functionality under demanding conditions, making it a crucial enhancement for those looking to elevate their transmission performance. Features: Incorporates wider, heavy-duty bearings that are retained with beveled retaining rings to eliminate bearing end play Shifter shafts are solid, true center line and have rigid strength that replaces the OEM hollow shafts Includes trap door with bearings and shifter shafts Made from 6061 precision machined aluminum Holds centerlines within 0.0005 Made in the USA