putting them together right now but need to know how to get the pin (two circled devil that goes on both ends of piston) I hear you need a tool to get them in... where do I get this tool and how do I get them in ?

 

i'd like to know this as well

 

if its the two circle clips like what the JE's come with (probably so since it's the same company) than you can use a small screwdriver and inch it in little by little, thats what I've heard of poeple doing. In my case I am putting these (JE's) back onto stock rods and just had the pins pressed back into the rods, the same as they are OEM.

 

Arias are not like Je, Je are hard Arias are nearly impossible. Don't be afraid to bend them up a little. use a small flat head screwdriver and push it in then work the clip around until its all of the way in. wipe your blood off the piston and pray you never have to take them out.