Okay, I found a couple of 502T endlinks for my 16710 without trading my 550 endlinks, so now I am selling them. I have absolutely no idea what they should cost, the prices on ebay, chrono24 etc. seem to be all over the place. So if I too am way off let me know. Used but in good condition. I am selling for €160 EUR which includes shipping in the EU and paypal fees.