Honda NS400 - 475cc NS500 race replica.
This is a Honda NS500 race replica built by Ian Wright of classicracereplicas.com from an NS400 with engine enlarged to 475 - amazingly fast, light & beautiful; has been in dry storage, unused since it was built.
The NS475 big bore kit fitted consists of Big Bore Barrels, Pistons (63mm), Heads and Gaskets.