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Steerer Tube Extender

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Steerer Tube Extender

Old 08-22-15, 05:59 AM
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Steerer Tube Extender

Steerer Tube Extender on a carbon fiber composite bike, forks are also carbon fiber, but the steerer tube (at least on top) is metal.

Is this a problem with extra stress on the bike head?
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Old 08-22-15, 07:34 AM
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Head tube, Frame , or this about forks?

Blanket generalization ? IDK. obviously + height = adding leverage , the fork metal is better, if Steel.

BBB BHP-21, nobody distributes these in the USA anymore , so find them abroad and buy it there

it is a quill like tube, inside the fork tube.

if threaded 1" then the thinner model 20 will be what may work ..

Last edited by fietsbob; 08-23-15 at 09:32 AM.
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Old 08-22-15, 09:05 AM
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If you stop to consider that some people leave their steerers super long with a tall spacer stack, I can't see hat it's any different.

In any case, it's not a black and white issue, but more of a spectrum with total height above the top bearing, stem extension, rider weight/strength and riding style all being factors.

So maybe it's a problem for a strong rider in hill country who really works the bars on climbs, but OK for a lighter, less aggressive rider in the plains.
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Old 08-22-15, 02:03 PM
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Many fork manufacturers limit how much steerer should extend above the upper bearing race. I would suspect that many would consider a steerer extender a violation of warranty. Andy
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Old 08-22-15, 03:44 PM
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Originally Posted by SammyJ View Post
Steerer Tube Extender on a carbon fiber composite bike, forks are also carbon fiber, but the steerer tube (at least on top) is metal.

Is this a problem with extra stress on the bike head?
I assume you're trying to raise the bars. Depending on the stem you currently have, you might be able to raise the bars enough by changing the stem to one with a steeper angle. However, if you already have a 17 degree and it's flipped up, you may be at the end of the road stem wise. On the other hand, I'd be careful putting a extender on a carbon steerer. Most have a limitation on the number of spacers that can safely be below the stem.
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Old 08-22-15, 04:55 PM
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Being an alloy steerer tube, I would say go for it.
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