Just look at a list of 520 chains from one top brand and you’ll see there are at least five different types of O-ring chain available in that one pitch: standard, super heavy duty, heavy duty X ...

The best replacement chains and sprockets for your motorcycle as chosen by MCN with options for all budgets for ... D.I.D Heavy Duty Drive Chain - 520 Pitch VX3 - Gold . Price: From £72 .74. www ...