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Syncros 1-1/8" Threadless Headset - Where is the top cap?(4 posts)

Syncros 1-1/8" Threadless Headset - Where is the top cap?zmarke
Oct 2, 2002 5:45 AM
I purchased a syncros headset online and it did not come with a top cap. Is this correct? Do I need to purchase a 3rd party one? Any suggestions? Does a top cap even have any technical reason for being or is it just to keep dirt and crap from falling down inside your fork?

any help would be great...
top cap required...C-40
Oct 2, 2002 8:21 AM
All threadless headsets that I've bought came with a top cap, and yes it's needed. The top cap is used to push the stem down to provide a slight preload and zero clearance on the headset bearings. Then the steering tube clamp bolts on the stem are tightened to hold the setting. After riding a few miles it's always good to recheck the headset. Often the lower bearing race will move a bit, and some play will develop. Any amount of play will quickly damage the lower bearing race.
re: Syncros 1-1/8" Threadless Headset - Where is the top cap?Eric_H
Oct 2, 2002 3:58 PM
If I remember correctly, the Syncros headsets were sold without top caps and star nuts. If you are using a carbon fork, it will be a moot point as you will have to use the provided expander wedge and top cap. If the fork is non-carbon, I am sure a LBS could hook you up with a top cap and star nut.
re: Syncros 1-1/8" Threadless Headset - Where is the top cap?DINOSAUR
Oct 2, 2002 4:47 PM
I was using a Syncros threadless stem on one of my bikes at one time. It came with a star nut and a cheap plastic top cap that was useless. Check with you LBS and see if they have something you can subsitiute. You need a top cap, and something that fits properly to keep the moisture out (as I later discovered). I used the top cap that came with the Icon stem on my bike. It was a slightly larger diameter, it worked, but water seeped in if I got stuck in the rain.