525 Pitch chains are used on many of the highest performance motorcycles and superbikes.  They have the same pitch length and roller diameter as 520 series, but have a wider link to spread the greater loads.  Pitch size is 1.588cm, link width 7.85mm and roller diameter 10.16mm.  There is a great range of choice in the 525 series with different joining methods, plate thicknesses and colours to choose from so take a good look round to find one that is perfect for your bike and the way you ride it.