We have teamed up with JB Conversions to bring you the absolute strongest parts currently available to make our complete Rock Box, Using our billet machined case and JB Conversions 32 spline shafts and 4:1 LoMax gear set.
JB Conversions 4 to 1 LoMax gear set has been designed to achieve maximum gear strength and the lowest possible reduction ratio for the Jeep Dana 300 transfer case. For over 2 years, the LoMax gear design effort has been an independent project of JB Conversions, Inc. and bears no affiliation with any other aftermarket gear manufacturer. The LoMax design features that set it apart from others are incorporated into all areas of the gears. Tooth volute shapes and face finish, gear hub thicknesses, and manufacturing tooling & processes yield a gear set far superior to any other gears being produced for the Dana 300. The LoMax gears were designed as a complete 5-gear "set" from the very beginning. This means there were no strength-limiting tooth size restrictions forcing the new gears to mesh with smaller stock gears. As you will see in the accompanying photo comparisons, the result of this "clean slate" philosophy is a set of gears with massive, helical gear teeth with tremendous strength capacity.
Includes: A completely assembled Rock box with JB Conversions 32 spline front output shaft, option of Novak super short or JB conversions rear output and JB Conversions 4:1 gear set
Complete case with 4:1 gears, 32 spline shafts 72.6 lbs
Stock Dana 300 weight 85 lbs
Use the note field to enter which drop orientation you need
Made 100% in the USA
Wanna make it a 4 speed? Check out our underdrive option.
This is a made to order product with a 20 to 24 week turn around as all cases are machined in house.
If you have any questions or comments don't hesitate to give us a call, text or email
