Description
The 6003 DDU is a workhorse bearing found in almost every Wahoo KICKR trainer ever made. If your KICKR is making more noise than it used to, or your power numbers seem inconsistent, worn bearings are the most common cause.
This is a direct drop-in replacement — same dimensions, same seal type. We use NSK bearings for all our replacements, the same brand trusted by professional servicing workshops.
Check our compatibility checker to confirm this is the right bearing for your trainer, or contact us if you’re unsure.
