L - Limited-slip differential
Limited-slip differential - The differential is one part of the system that transmits power from the engine into drive at the wheels. In a two-wheel-drive car, the drive is shared 50/50 between the two wheels. However, when one wheel is on a more slippery section of road than the other, the car is unable to drive normally. A limited-slip differential overcomes this by limiting the amount of drive sent to the wheel which has least grip, or may be slipping, to maintain momentum and stability.