This is a brand new and NOS Honda RS500 or NS500 NOS rear silencer part 18330-NF7-000 very hard to find rare part for the Honda factory triple racing bike, this is one of the pipes that exits from under the seat, brand new and has a very small ding as shown in one of the pictures but ofcourse will not be seen when fitted.This is the later rounder type as earlier ones were oval.

Superb handmade Honda quality and super light.The last time that Honda sold these they were priced at over a thousand Euros.