Originally Posted by
fietsbob
I used the BBB Bhp 21, myself, it is different because it is a Quill, that goes Inside the steerer, rather than outside.
and offers a height choice.. the stem option, at full height, was.. I could use then was 2 stems,
as I wanted the 2nd one for handlebarbag mounting on my Trekking bike Rebuild.
http://bbbcycling.com/bike-parts/headset-parts/BHP-21
Did you use the quill type with a threaded or a threadless steerer tube? If the second, did you have to remove the star nut so that the extender could go deeper into the steerer tube?