The oval piston concept continued in the NR750 endurance bike, which made a brief appearance during the 1980s. Finally the technology was transferred to the road, at least on a limited basis, with the bike simply referred to as the 'NR'. One of the most expensive road motorcycles yet offered for sale, a limited number of the NR models was sold in 1992 with a 750 cc version of the engine capable of developing approximately 125 bhp at 14,000 rpm in standard form. Although a heavy machine by modern standards, it incorporated a range of technologies and design features that have now appeared on more common models.
