first thing i saw was a 400 dallor dent in my wallet. lol other then that they r supose to work great. just put mine on last week. adn i will be out wed and thurs this week to test it out.
but no matter who you ask if they have one they will deff 100% recomend one, reason i got one. plus the 600cc bikes, the new ones are all real twitchy. smooths them out alot.
also recommend a suspension adjustment done by a shop.