Chain wheels  Sprockets For all 350 /4 – 500/4 – 750/6 – 900/6Sprocket front is the same as from Yamaha XJ 550/600 – 91/92 – size 530 – 17 toothFor 500/4 Sprocket back is the same as Ducati 900 SD or Pantah – size 530 – 44 toothFor 750/6Sprocket back is the same as Ducati 900 SD or Pantah – size 530 – 42 toothFor 350/4Sprocket back is no replacement. Option is 16 tooth front and 41 tooth back in the size 520 then you can use the back chain wheel from a Cagiva Freccia C 12 89/90For 900 SeiSprocket back is no replacement. The Dutch club has made 20 in…