what model bike was it originally for..?? I have a full Arata on my Zed, but I MISS the Micron Serpent system that is on my 12 !!! no knock on the Arata system, but would dern near KILL to get a Serpent for this Zed !!Just like to let people know that i fitted a 2003 zx636 shock and 04 ax10 linkage with no issues to my 2003 z1000 first gen,it went straight on,and i fitted a 2002 full micron system.Only problem i had was i had to swap around the large bolt for the linkage,i had to move the side with the nut to the other side.It fitted perfect with z1000 exhaust gaskets,only thing is had to shorten the link pipe and make a new exhaust hanger,will post photos soon......