Originally Posted by
Hiro11
Good point, I have no idea who is actually running the "Shimano Store" on Amazon. Maybe the ones I got were legit, but I've never had an Ultegra chain snap before. Let alone TWO after less than 100 miles each. I've just glad this neither break happened during a hard effort.
Correction...looks like the storefront is run by Optivations, but ACK may be the distributor/warehousing 'partner' they reference
https://www.optivations.com/