Phantom Grip is a limited slip differential conversion kit. It serves two distinctive functions in your street or race vehicle. First, it functions as a disc-type limited slip in cornering and braking. Secondly, the Phantom Grip works as a locker in hard acceleration causing both wheels to receive power instead of just one. The Phantom Grip is extremely strong and durable and comes with a Lifetime Warranty for breakage and manufacturer defects. - Accelerate Quicker - Eliminate Torque Steer - Corner Faster - Improve 60' Times.