Joe Soap Posted January 7, 2020 Share Need some info on road bike stem clamp diameters please. I have a older De Rosa that needs a longer stem, thinking a 90mm to 100mm will do the job. Handlebar and steerer diameters are both a tad over 25mm.Is this a common size or will I struggle to find a 2nd hand stem? Link to comment Share on other sites More sharing options...
Longbarn Killer Posted January 7, 2020 Share When you say "a tad over 25mm" does that mean 27.2mm? If so, its a pretty standard size (although larger diameter ones are becoming more common place) and should be easily available Link to comment Share on other sites More sharing options...
Joe Soap Posted January 7, 2020 Share When you say "a tad over 25mm" does that mean 27.2mm? If so, its a pretty standard size (although larger diameter ones are becoming more common place) and should be easily availableNope, less than 26mmCan't remember the exact decimal but it's 25.something mm Link to comment Share on other sites More sharing options...
DieselnDust Posted January 7, 2020 Share Need some info on road bike stem clamp diameters please. I have a older De Rosa that needs a longer stem, thinking a 90mm to 100mm will do the job. Handlebar and steerer diameters are both a tad over 25mm.Is this a common size or will I struggle to find a 2nd hand stem?They're 1 inch or 25.4mm Not very common anylonger. Try sjscycles. Co. Uk Edited January 7, 2020 by DieselnDust Long Wheel Base 1 Link to comment Share on other sites More sharing options...
DieselnDust Posted January 7, 2020 Share https://www.sjscycles.co.uk/ Link to comment Share on other sites More sharing options...
FondyMig Posted January 7, 2020 Share I have a 100mm 25.4 stem taken from a.... De Rosa. Let me know if you're in the market or interested. Need some info on road bike stem clamp diameters please. I have a older De Rosa that needs a longer stem, thinking a 90mm to 100mm will do the job. Handlebar and steerer diameters are both a tad over 25mm.Is this a common size or will I struggle to find a 2nd hand stem? Link to comment Share on other sites More sharing options...
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