I did the -1 +2 520 conversion. Now I have no way in hell on proving this but I've had a few instances where my rear tire was a bit squirily after the change (it never happened on stock setup). As far as I know, I didn't hit any slick spot on the road, nevertheless, it's a heart a stopping experience. I believe this is caused by the quicker rotation of the rear tire. I ain't no racer and not trying to be one but this is something that I noticed going to -1 +2 520 conv.

 

Hmmmm ok Thanks On The Imput Every One Keep On Posting I Just Need More Moneys Just Bought A Stand A Undertail And Flush Mounts Getting A Two Bros Titanium M2 Slip On In A Week Or Two Then Ill See About The Healer And Sprockets