I need to replace the springs on my caliper brakes, road bike rim brakes, but cannot find where to source a replacement. Local bike shops haven't come up trumps, and nor have the usual and less usual online retailers. Even eBay and Amazon have let me down.
I have Tektro R540 calipers, and the springs seem to be as rare as hen's teeth, and knowledge about them just as rare.
Any tips on sourcing such things?
I'm going to take them apart completely and give them a good clean, but as they don't spring back when the brake cable is disconnected, I've ruled out cable / housing issues
Thanks for any help
GTE