Recently replaced the DU bushings on my 2008 Mount Vision's RP23 with needle bearings.
I ordered their needle bearing and DU bushing tools to save some hassle of finding a socket that is the correct size. In the past I would use sockets to push out the old DU bushing and to install them.
Installation went smoothly except for trying to install the two 0.5mm shims on the lower part of the shock. Measuring the original length of the reduces and shock indicated it was 42.17mm. After installing the RWC needle bearing and hat it was 42.02mm. The best I could do was to squeeze in one 0.5mm spacer but I decided to remove this. There was no play with the shock without any spacers installed.
I would also suggest replacing the air sleeve seals since the shock has been removed from the bike. Fox has a great site with instructions on how to open up the shock
Pushing the bike seat down I can feel there is less resistance with the needle bearings vs. bushings, however I still have to take it off road to see how it performs.
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