I've got Ikon rear shocks (Thrux-length) and Ikon fork springs (with 15w oil) on my Bonneville, and I absolutely love them. The combination is definitely stiffer than stock, but I weigh 250 pounds so this is not a bad thing. This upgraded suspension is awesome in the twisties -- my bike remains composed through turns even on pavement that's rough enough to make my riding buddies on Speed Triples have their bikes get skittish on them. It feels like I'm riding on rails. (For what it's worth, I'm running the rear shocks with medium preload (second of three settings) and the damping adjuster set to 2, I think.)
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