Product review (4 stars): Just the belt pulley would have fixed my problem
I put this kit into a 10 year old duet dryer that was squeaking very badly.  there are you tube videos on how to instal,l but make sure you find the right one because this kit fits a lot of different models and they come apart differently.  It requires almost complete disassembly of the machine to install the drum rollers.  As it turned out it was only my belt pulley that was bad and That could be changed by only removing the bottom front panel.  Of course I didn't find that out until I had it apart so I went ahead and used the whole kit.  The new drum rollers were very noisy on the old shafts for 10 loads or so but are quieting down slowly as it runs.  Some videos said to use oil on these bearings and some didn't.  The included instructions said nothing about it and you could only do it once as they are inaccessible once the machine is reassembled, so I did not.  Maybe I would have had I known how noisy it would be.  If I had it to do over I would have replaced the belt pulley and left the rest alone and kept the parts in case. You could always tear it apart and install the rest of the kit if it was still noisy.