Slipper clutches are an essential tuning part in off-road 2WD vehicles. They help protect the drivetrain from sudden surges and help tune the vehicle on slippery surfaces. This slipper clutch is specific to the BB-01 off-road chassis. Gear-integrated shaft (20T) x1 Slipper screw x1 Plate A x1 Plate B x1 Slipper pads x2 1050 (10x5mm) ball bearing x1 Spring seats x2 Spring x1 2.6mm lock nut x1 Adjusting spring tension allows change of slip timing and acceleration traction, to give more stable performance. Features precise and durable gear-integrated shaft. Compatible with the BB-01 chassis.