GB Metric
Main Photo
Category:  Stems
Name:  GB Metric
Brand:  GB
Model:  Metric
Years:  Mid 1960's - ?
Country:  England
Added By: peterbman on 03/27/14
Updated By: abuhugh on 09/16/18
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GB MetricGB MetricGB Metric
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Bar Clamp Size 25.4Quill Size 22.2
Expander Style ConicalExpander Bolt Size
Binder Bolt Size   
General Information
GB's first metric spec alloy stem, which appears in the mid 60s catalogues alongside the earlier, imperial spec, Spearpoint alloy stem. These were offered in 70mm, 90mm and 110mm extension lengths with a quill shaft of 133mm.  The later Norma model stem was similar but lacked the 'bump' at the back where the expander bolt enters the quill.
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Resources:Reference & Charts
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