Detroit Speed, Inc. offers Floater Axle Housings for Street, Autocross or Track cars. Floater axles offer improved handling with predictable and consistent braking and tire contact patch. Eliminates axle deflection and greatly reduces brake knock back and offers increased bearing life. Knock back occurs when the axle end and brake rotor deflects causing the rotor to knock the pad back pushing the caliper pistons back in the caliper away from the rotor surface. The driver must then pump the pedal to re-establish a firm brake pedal.