Check Valve Piston for RG forks v1

For all RG bikes
(M3 threads on shaft in front fork and inside diameter of reservoir 7,5mm)

This piston allows front fork to use different damping in compression and rebound.
Oil flow will open a membrane in one direction and in the other direction, it will seal the small holes, generating more damping.

* Remove the original piston and the two nuts holding it in place
* Thread this piston
* add membrane (Not included in printing)

Also needed:
A membrane to sit on the middle of piston
(I used a 0,5mm PVC sheet, outer diameter 6mm, inner diameter 4mm. An o-ring 4x1 could also work although I didn't yet make any test with that)