Hi,

It is the HRC A-Kit version of their standard piston: 13100-NX4-781 but it has a flat top and relocated pin for the ring so that it doesn't snag when running the A-Kit 6 stud cylinders.


The part number is correct with 000 and you can find mention of 13100-000-F06 when searching the internet.

BTW, the NX4 piston I listed above is about $250. How much is it at HRC Europe?

TIA,

Joel
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1994 MC28 Rothman
TSR250 AC28M