Team Associated RC10B74.2 Factory Team Decoupled Slipper Kit. This optional set is intended for the RC10B74.2 platforms to decouple the front drivetrain from the rear when off power. Having the front driveline spinning freely when off power, and on the brakes, greatly reduces the front tire binding and scrubbing on the track surface through a corner. This allows for more off-power steering without affecting the on-power feel and acceleration that four-wheel drive provides.