Hello Martin,
I had to replace the KRR at approximately 290,000 kilometers (assuming it had ever been replaced before).
then at 90,000 (so before I even received the car), because I had installed a slightly oversized...
The freewheel pulley (B3 / B3G alternator) was damaged (only three ribs remaining)

.
At 52,000 kilometers (or miles), I wouldn't worry about it yet.
Sure, here's the translation:
'Best regards.'