Still using the ITM CNC adjustable stem that stem with my ITM trekking bars, If I were to replace it, this is what Id get
https://www.sjscycles.co.uk/stems/11...m-clamp-black/

but there are lots of companies making stems https://www.sjscycles.co.uk/stems-1-18-ahead-standard/


rise is a degree number , and you say you want it shorter, too 50mm, 5cm.. is pretty short..

I have one that length on my bike friday ..





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