Originally Posted by DarkJak

I have a Coolerworx for my E36 M3 and it actually used an M12x1.5 thread pitch for the knob. Just FYI for anyone considering buying a separate knob for their Coolerworx shifter, def double check!
M12x1.5 was a major PITA to find knobs and extensions for.

I'm also a huge fan of the IRP button and cable routing. Just wish knob shapes were an option because I am fairly particular, though obviously the push button lockout makes swapping that out for generic knobs an impossible design. Would need to be something like how Raceseng can screw on different shapes to their cores I think.