50 Coolest Motorcycles Of The 70s 16. Kawasaki KR250 The Kawasaki KR250 was produced from 1975 to 1982 for the 250 cc class of the Grand Prix Motorcycle racing. The bike won 4 world championships in 1978, 1979, 1980, and 1981. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50