Engine Isolators

[l0nestar]

Does anybody know how to tell the difference between the stock RB isolators and the NISMO units? I heard they are almost identical, but the NISMO units were slightly taller. Does anyone have the height of the stock units or NISMO units. Thanks!

[mello88]

I believe they are the same physical dimension, however from what I can decipher the Nismo's are 33% stiffer rubber compound. Before I put the Nismo's on mine I compared to the stockers are they appeared identical (I didn't take any measurements sorry). They may seem taller due to the rubber being stiffer and not sagging as much? GL