This is a preload spacer for the Logitech G920, G29, G27, & G25 pedals. May work for others too? Let me know if so and I'll update the descriptions. I
...Show more included the dimensions so you can figure it out yourself or remake it however you feel. I don't feel like doing all the calculations to give you exact preload figures, but if you want to do that leave it in the comments. 6mm - 10mm thick versions included, 9mm is flush with the inner spring/damper retainer.
The top side of the arms have a 1.5mm taper so it slides in easier, keep that in mind for your print orientation.
All dimensions in mm.