A dozen vintage bikes with Top Gear ties JAMES MAY'S 1971 KAWASAKI 250CC A1 SAMURAI It's not as sexy as a Mach III triple, but the little 250cc A1 Samurai could reach an astonishing 103 mph thanks to 31 hp on tap, which were phenomenal numbers for 1971. This is a very late Samurai, and Bonhams claims it's in great shape. A five-speed transmission and oil injection would make it quite livable, too. May didn't ride it much, though. It should bring between $7,500 and $9,000.