I just bought a Chris King headset for our tandem that has a 1 1/4'' threaded headset, which also goes by the name EC37, so could be the same. The CK was expensive (but worth the investment for the tandem in the long run), but I could literally not find anything else. I hope you have better luck than me.
I just bought a Chris King headset for our tandem that has a 1 1/4'' threaded headset, which also goes by the name EC37, so could be the same. The CK was expensive (but worth the investment for the tandem in the long run), but I could literally not find anything else. I hope you have better luck than me.