Have an 03-06 R6 Throttle tube FS. Brand new, never used. Bought it for my SV but decided not to do the mod. Apparently doesn't work that well with the 2nd Gen S's anyway. Part number is
This is a cheap way of decreasing the amount of twist required to get to WOT on an SV, 1/5 turn vs 1/4 turn. Great as you don't have to re-grip to get to WOT on the SV.
$15, my cost to buy and get it shipped up here.