SHIBATA GRK DR competition membrane Hard R31S053

Original damper oil "SHIBATA DR damper oil" of course
We also paid particular attention to oil resistance so that it does not expand even with silicone oil.
It has developed it to match the hard spring characteristics that are popular these days.

GRK global standard resin damper cylinder
GRK4/GRK5/shock upgrade kit, etc. Aluminum damper cylinder
It does both.