Originally posted by daniz24
I think the RR is a bit tight too compare to NSR, isn't it darling? 
Yes honey..
Like AMG mentioned, the NS and RR is using cnc-machined piston. But in NSR you will find the microcasted already.
Newer batch of NSR, comes with the piston that you will found in MAX S series. Even lighter than before and only have i pit/oil groove in top.