piece of cake...just put one in my 09 570...Dirt Tricks, spring activated not oil pressure like oem...just pull cover off tensioner and then loosen and remove the tensioner itself...the tricky part is installing the retracted DT tensioner without it sliding to its full length because of the gravity issues of the forward pointed cylinder and the tensioner wanting to slide to full extension..solution, lay bike on its side and perform removal and installation and your done...instructions are self explanatory and procedure takes all of 5 minutes...