Shimano RS21s - where can I buy bearings and cones?

[Mile195]

Rear wheel bearings, drive side have had it. well, not so much the bearings themselves as the cone - very pitted.

Having trouble tracking down a replacement though. The bearings themselves seem to be available, but the cones do not. Anyone got any ideas?

 

[RecordAceFromNew]

What you you are looking for is this (despite the label it actually includes the drive-side cone as well as the locknut). Your LBS should be able to order it from Madison and supply for £6, or alternatively you can mail order from e.g. here.