hey,
got the thunderbike bars on my '11 roadster, and like they state, the bracking which comes with the bars are not good for the roadster.
i made up a bracket of my own. even tho the bracket must be fabbed up, i wouldn't want it any way else anymore, those bars are great!
in this pic you can see how much the tach should be moved:
in this pic you see where they end up if you make a bracket like i did:
this is a pic of the bracket i made out of 1" thick plastic,
1= holes drilled thru the block to bolt bracket onto risers.
2= holes drilled and wiretapped to bolt tach onto bracket
i used flatheaded hex bolts 4 all bolts i replaced.
Hope this helps,
greetz glenn