HONDA http://world.honda.com/link/
   
YAMAHA http://global.yamaha-motor.com/link/
  http://www.yamaha-motor.eu/uk/services/online-parts-catalogue-uk/index.aspx
   
KAWASAKI http://www.kawasaki-cp.khi.co.jp/network/index.html
   
SUZUKI http://www.globalsuzuki.com/globallinks/index.html