Howard,
Yep, you are absolutely right, if someone had shown me that specification when I was paying over £100 for the chain (nearly twice as much money as IWIS nickel heavy duty) - I would not have been able to give them my money fast enough............not!!!!!!!!!
I think you are stretching (no pun intended) the concept of fairness personally.
I do feel more than a little "conned" it has to be said. But each to their own, you live and learn and I know where I will take my motorcycle pounds next time.
If it was suitable for the final drive of a motorcycle, then it's more than likely it would have said so I am sure. But, you are right, it does not actually say "this chain is not suitable for the final drive of a motorcycle" just as the technical department of IWIS would neither recommend nor confirm not suitable, so - my fault I suppose.
Would have been nice to have had the debate with Sprockets Unlimited though. I tried that route first before posting here.
Cheers