Threaded bump stop washer with a 2.250in outside diameter, 12mm x 1.0 thread, 0.185in thick, aluminum with a natural finish.
Compatibility
Fits Bilstein shocks with an M12-1.0 threaded bump stop specifically. Do not use on Fox or Penske shocks, which use different thread specs.
FAQ
What shock brand and thread does this washer fit?
ALL64291 fits Bilstein shocks with an M12-1.0 thread.
Can this washer be used on Fox or Penske shocks?
No. Fox shocks use a 7/16in-20 thread (ALL64292) and Penske shocks use a 1/2in-20 thread (ALL64293); ALL64291 is specific to Bilstein's M12-1.0 thread.
What are the dimensions of this washer?
It has a 2.250in outside diameter and is 0.185in thick.

