37842-91 Maindrive gear bearing install tool

This Jims maindrive gear bearing installation tool is designed for modern 5-speed and custom 6-speed transmissions. It fits 1991 to 2005 Dyna, 1991 to 2006 Softail and Touring models, as well as 1991 to 2005 XL Sportsters. The tool is engineered to install both inner and outer 5th gear bearings to the correct factory depth. It incorporates the newer bearing depth specifications while remaining compatible with earlier depth requirements. Using this tool ensures that your transmission bearings are perfectly aligned, which is essential for smooth shifting and long-term durability in high-torque applications. It is a professional-grade solution for serious transmission work.