LSD rebuild components are generally OEM unless specified. 168, 188 and 210 LSDs use different clutches (inner discs). There are two types of early 168mm clutch. Clutches are all 2.0mm except the 210mm which are 2.5mm. I can grind steel plates to any thickness from 1mm to 2mm. Kits generally come with Hardcore Steel Plates and not the inferior OEM plates (outer discs).