I'd say that was a little expensive. He's listed it as new also but then says it's been restored, so it's likely an ex- Shell Advance or TSR bike... I've seen a few pop up in the UK and they're usually around the 30-35K mark, with spares...
Yes it's a V-Twin. HRC initially used 2 CR250 engines/barrels as a base then developed a specific unit. Apparently they were harder to ride than the V-4 at times, due to the huge torque and crank spinning the wrong way. Made them wheelie monsters.
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NSR300R - Why did i ever have a 250...