[4130biker]

I have an integrated/ tapered headtube on my bike (spec. sj evo). I had a tapered steerer, but will be switching to 1-1/8".

What headset/adapters will I need for my lower assembly to switch to 1-1/8"? I wouldn't be suprised if it's a special crown race, but I have not been able to find anything.

This document from Transition was helpful for me to figure out what exact type of tapered headtube I have, but now I'm stuck.

Thanks for any help.

 

[daisycutter]

This may help
http://www.canecreek.com/headset-fit-finder

 

[4130biker]

Thank you, that was helpful. Now I know I need this:

Bottom Headset:
SHIS:IS52/30 - 1.5" Integrated (IS) to 1-1/8" Conversion

Now I just have to find it!

 

[Nagaredama]

I would check with Spec first. Some of their tapered headtube bikes use a Spec only standard and you have to buy a coversion race from them.