Julian,
the F3 shock has different internal valving, setup for track use like an RS. Combined with the added adjustablity, makes it real nice to have for track use.
I can tell you that just comparing my NSR back to back with my RS when I was at Ebisu last May, I didnt realize how much the NSR rear shock needs work. The RS was rock-solid and stuck well, the NSR rear felt like it was all over the place and unpredictable.
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Paul Herr
'88 FZR4/GSXR/YZF Frankenbike
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