I just got me a set od HRC springs for my forks so i think they're not disco'd. I got the p/n from the tuning section. After they were setup right, they feel feckin awesome! Can't go wrong with HRC..
and yes, the racetech springs are a lil too stiff for the lil nsr.
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MC21 300R w/SE bits, Rossi 2001
MC28SE Silhouette Repsol