Premature aftermarket timing chain failure

[CBR.worm]

I don't know if this is the case for timing chain sets, but other chain/sprocket drive systems I've dealt with require you to replace the sprockets together with the chain, otherwise, the slightly worn sprocket won't properly distribute the load on a new chain, causing premature wear.

 

[Cujet]

Originally Posted by chipdipjones

did oil change due to metallic sheen in oil.

I'd do more than one oil change, in rapid succession. Consider a magnetic drain plug. Grit, carbon particulates and especially steel particulates will accelerate wear markedly.