For tapered steerer (can be converted to 1 1/8 steerer through purchase of a FS160-5538 crown race)
FSA Part Number 121-0501
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Check out the handy FSA Headset ID Tool here http://www.fsaeasyheadset.com/
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If you are looking for a complete brevet or expedition setup, advice on gear, or help with finding the right bikepacking bag or dynamo system, we're here to assist.