Bore out service - D300 Retainer Transfer Case Available in Dana 30-based (E30)

Available in Dana 30-based (E30) and Dana 44-based (E40) configurations

The D300 Colossus is a fully modern transfer case utilizing billet shift carriers machined from half inch thick steel to ensure performance and smooth shifting control in the most demanding applications

easy-to-reach location on top of the front case

Our twin cable mounting bracket is designed to fit with our entire Colossus transfer case product line

Gear Compatibility: Our DIY Builder case is compatible with both stock NP205 gears

Bore out service - D300 Retainer Transfer Case Available in Dana 30-based (E30)If you are upgrading your Dana 300 from a stock 26 spline front output shaft to a 32 spline, you need to bore out your input retainer to fit the upgraded larger shaft. For customers that are not able to do this on their own, or do not have access to a machine shop, Behemoth Drivetrain offers bore out service for these retainers. The service works for both the Behemoth Drivetrain model 32 spline shaft and the JB Conversions 32 Spline front output.