Atlas LSD with 18T Side Gears, 45/45 Ramps, 120Nm (Old ZF Spec)Gripper Multi Plate Limited Slip Differential with Steel Casing, 18 Tooth Spline Side Gears, 120 Nm Preload and Old ZF Race Rally Spec 45 45 Ramp Angles for Ford Atlas Axle. This Limited Slip Diff comes setup with 45 45 Ramp Angles but you can easily open the casing to change to 45 80 Ramp Angles, without having to buy any extra parts. Specifications Casing Steel Ramp Angles 45 45 Side Gears 18 Tooth Spline Preload 120 Nm