...that's nice, it's got the small ballast...IMO get the the white light (4000-5000K)...purple is for weenies...
not sure it' what you're gonna want. That 's a HI/Low lamp, the R11S has two lamps, usually you use 2 lamps/2 ballasts. You either buy the H7 or H5 or both,
as seen here:
http://forums.pelicanparts.com/showthread.php?t=427560
Low beam is plenty BTW...
That said, I have one of these Hi/low kits on my airhead GS. Since it's a one lamp set-up, the kit was ideal. lumens is pretty good.
But for my $$$ I'd go for the low beam solo dealie. Split a kit with a fiend...