probably nothing. Power Commanders have the same issue with part numbers, apparently Suzuki thought the TLR was going to be discontinued and then kept building them until 2003, some of the aftermarket vendors had to re-introduce parts for their catalogs.
N2 wheelies has recently pointed out to me just how extremely critical the pack thickness is with the TL clutches, in order for the finger/ramp mechanism to operate correctly. It's not just getting the pressure plate to work like on other bikes, the pack thickness determines exactly where the fingers sit on the cam ramps, and how that mechanism will work.
ive used barnett plates without issue but ive always had to swap a few of the thick for thin steel plates to make the stack height correct. after that they will work as good as stock and are considerable cheaper.
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