The end you clamp your AHead stem to; it has no solid attachment to anything else until you get to the wedge/cone inside the steerer, several inches away. If it's a wedge, you can also be pretty certain that the axis of the quill will be skewed from the steerer axis, see Chris King on facing AHead stem for why this a bad thing.
The end you clamp your AHead stem to; it has no solid attachment to anything else until you get to the wedge/cone inside the steerer, several inches away. If it's a wedge, you can also be pretty certain that the axis of the quill will be skewed from the steerer axis, see Chris King on facing AHead stem for why this a bad thing.