Add drivetrain rigidity and precision to throttle input to your Subaru with our PERRIN PerformanceTM Diff Lock Out Kit. The new 2008+ Impreza Diff Lock out kit consists of 2 aluminum bushings and 4 urethane bushings to completely remove any and all movement from the rear differential under extreme conditions such as drag racing and road racing.  Under these conditions the drivetrain (diff included) will twist and move around before it starts to turn the wheels causing a "squishy" or spongy feel at the point of initial acceleration.  The PERRIN rear diff lock down (DLS) locks the differential down for zero movement so when you push on the gas, the car goes with no delay.

The PERRIN (DLS) goes hand and hand with the PERRIN (SLS) for the 08 + impreza/STI/WRX.  With both the DLS and SLS you will notice a significant improvement in the snappiness of your powertrain.