If i'm just changing from stock shocks to GR2's, what washers do I need to use on the GR2's? All that came with them are new bump stops and the top nut. The bump stop seems to key into the piston shaft unlike the OEM so I'm not sure which oem washers to omit.

 

Just a guess mind you but reuse all hardware that did not come with the shocks.

 

Yes, reusing all of the hardware that didn't come with the shocks (assuming they're not damaged) would be the proper procedure. Shocks never come with anything else, besides the nut. Sometimes they don't even come with that. Good luck!