CUSCO LSD 1C7 AT LSD Type-MZ Spec-F Front 1 WAY for TOYOTA GR Yaris (GXPA16)Type MZ Limited Slip Differential Recommended for Drivers who Just love the linear actuation of traditional cone spring mechanical LSD Drive High Powered Racing Vehicles Prefer the flexibility of shallower actuation rate from Initial Lock Rate to Full Rate Classic Cone Plate Spring Actuation Opposing lock vector of initial lock cone spring vs. the actuation force of the driveline Progressive and linear actuation with shallower rate of actuation.