I installed the following on my 2010 Husaberg FE 390 and have been *very* happy with the results:
== TM Designs Factory 2 "Slip-n-GLide" Kit (chain guide, swingarm buffer, lower guide pad)
== Dirt Tricks "Ironman" 52T sprocket
== DID 520 VT2 x-ring chain (riveted, no master link)
I did the big "gulp!" and bought the DID KM500 Chain Tool for properly breaking, installing, and riveting DID chains. Expensive -- but it works so well!
I'm now at 2100 miles and rear sprocket and chain look great. Countershaft sprocket is looking tired so am replacing it with Dirt Tricks 13T "tool-steel" countershaft sprocket. That should take me out past the 4000-4500 mile mark.
Cheers! E-Ticket