The 1UP Racing Associated DR10 Hardened Steel Differential Lockout Hub is a heavy duty option that lets you convert the ASC91466 gear diff into a locked differential. Machined from hardened steel, this piece is designed to handle the punishment a drag car can put on the drivetrain. Package includes one lockout hub.
 
Team Associated DR10
Team Associated Pro SC10
Team Associated RC10 B5
Team Associated RC10 B5M
Team Associated RC10 B5M Factory Lite
Team Associated RC10 SC5M
Team Associated RC10 T5M
Team Associated Reflex DB10
Team Associated Trophy Rat