6 Speed Cruise Drive Heavy Duty Trap Door Upgrade Kit Designed to give transmission positive shifting and shaft center line integrity Made to handle todays performance powertrains Made from 6061 precision machined aluminum Holds centerlines within .0005in. Incorporates wider, heavy duty bearings that are retrained with beveled retaining rings to eliminate bearding 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 Available in black or silver Made in the USA