Dana 300 Colossus Shifter Upgrade D300 NP243 and NP246 series gears

NP243 and NP246 series gears

Motorsport & Advanced EV Programs

and demanding commercial or motorsport applications

Floor modification will be required to provide clearance for the relocated shifter assembly and levers

and case hardened

Dana 300 Colossus Shifter Upgrade D300 NP243 and NP246 series gearsThe D300 model Colossus Case has been a proven workhorse for more than a decade. Upon releasing our 2022 Pro Series case, we dramatically upgraded the internal and external shifter assemblies to both reduce weight, and provide incredible durability to the internal and external shifter components. This kit is designed to to fit all models of D300 Colossus cases, and is installed as a simple plug and play replacement of the original components.