Evolution limited slip diff. No serious competitor would use a Mini on a race track or autocross course without a limited slip differential should the rules allow it. This Evolution LSD is a massively upgraded and advanced version of the old popular Salisbury clutch-type LSD. It has improved clutch material and a unique design for smooth transitions between loaded and unloaded. This efficient design makes the EVO LSD easier and far more predictable to drive than the Salisbury. The plate-type diff design will NOT allow the wheels to loose traction even if one of them loses contact with the track surface. Ramp angles are 35/90 so the diff unlocks on deceleration for easier turn in.This 'race' version of the EVO LSD is pre-set for full race applications but can be easily changed.