Drexler barrier for McLaren gearbox (Such as MP4-12C 570S 650S 720S, among others) . Drexler makes a plate-type barrier based on the ZF design. Using better materials, more lock plates and custom pressure pieces, they come in many flavors, very effective, easy to adjust and very strong.
Very good upgrade for more grip and better predictability. The standard open differential with brake bars cannot match the mechanical feedback of a platesper. And with this upgrade, the rear brakes are relieved.
Available for many models