You don’t see many oval piston sport bikes for sale these days, or any other days, for that matter. The Honda NR750, an outgrowth of the NR500 GP bike, was a rare specimen back in the early 1990s when it was new and I just got a note from Tim, one of our regulars here, that he spotted one of these exotic machines for sale on eBay over in the UK.
The NR750 has four oval pistons in a V4 configuration. Two connecting rods for each piston and 8 valves per cylinder make this engine really unique. It’s sort of like a V8 where someone knocked down a few walls while remodeling. The motorcycle press was all over this when it was launched and people still scratch their heads just thinking about simple things like piston rings, (piston ovals?). The styling of the bike doesn’t jump out at you unless you know your bikes and you see the letters NR on the side.
They’re asking £115,000.00, that’s $184,448.50 at today’s exchange rate. Yep, pricey, but you are pretty much guaranteed never to see another one show up on bike night.
UPDATE: As comments below show, these aren’t quite as hard to find as I thought. Interesting. Still a neat bike, though.
Link: eBay NR750