Originally Posted by
paulkal
I also always had problems with Shimano headsets.
The 105 and 600 headsets lasted maybe 6 months. The Stronglight lasted until one of the aluminium cups crakced, about 15 years.
Shimano Ultegra 600. I bought a few to make sure That I would have the bearings when I needed them. I ride about 14000 miles a year on two bikes and have had only two cartridges wear out. I only service them once every year or two.