I'm overhauling son's bike, with SRAM Apex drive train.
When re-assembling the rear derailleur cage & pulleys, I noticed the top pulley does not have the intentional side-to-side play found in Shimnao & Campy deraillers. I believe this feature is (or was) a Shimano patent to facilitate indexed shifting.
Is this normal for SRAM top pulleys?
I have little doubt I used the correct pulley locations -- the pulleys are stamped with identification. Just looking for confirmation that I didn't overlook anything obvious ...
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Thread: SRAM rear derailleur & pulleys