Originally Posted by
Keithy P38
4mm steel, if you go thicker you won't be able to put the "r" clip into the bag piston.
It's easier to explain via the drawings, the rear bags especially as they sit 180 degrees to each other so you need to get the direction of the piston pin right when welding.
Peter has the latest drawings (minor updates made after mine were cut). I'm sure he would be able to assist in your quest!
Mine were laser cut and came out a touch sloppy but still good enough to do the job.
Cheers
Keithy