BBB Steering Tube Adapter
1 1/8" (BHP-21)
This adapter will allow you to use an A-head (threadless) bar stem on your 1" threaded headset system.
22.2mm quill diameter
25.4mm stem fitting
NB; please check - ahead stems with a 1" (25.4mm) steerer clamp are unusual, the majority are sized for 1 1/8" (28.6mm) steerer tubes (25.4-28.6mm shims may be required)
This adapter will allow you to extend the height at which you can affix the bar stem on a threadless 1 1/8" headset system.
25.4mm quill diameter
28.6mm stem fitting
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.