-2 rear,-1 front will put you into the scraping the curb feelers on the rear sets, but will not touch the plastics unles you pucker up to much and close the throttle at teh point when it scrapes... seen my buddy do it and it mess the right plastic. on my '10 with the same set up, adj. kickstand and hot bodies shorty exhust, I made a mess of the kickstand and left shorty pipe.. but didn't care as it was a $300 invenstement and easily replasesable.. and I didn't had any chicken strips on the 190 rear tire