How-to: Service Your BMW Transmission Shift Pins. - Eat, Sleep, Tinker.
Drift Tuning Adjustable Short Shifter Lever Knob fits for BMW 85-10 E30 E36 E39 Z3 E46 E34 Gear Transmission Getrag or ZF Racing & Daily (Black) 178mm ...
Shift pin replacement info | BMW M5 Forum and M6 Forums