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Reaming out a mountain stem for road bars(10 posts)

Reaming out a mountain stem for road barsOld Man Al
Nov 18, 2001 8:17 PM
The most rise that I can find with a road stem is 17 degrees, but I need more height than that. There are several MTB stems with 25 and 40 degree rises. In my case, a 25 degree rise would work. Yes, I could spend more money and order a custom stem, but I wonder if it would be practical to just buy the size of aluminum (6061-T6) MTB stem that I want (which is made for a 25.4mm handlebar) and use sandpaper to get it large enough that a 26.0mm handlebar would fit.

Has anyone tried this? Can it work?

BTW, if you know of any stock road stem with a higher rise than 17 degrees, then I'd sure like to know. I know that I could also get a stem extender, plus a different stem, but it would be lighter and better-looking if I could just find a stem with more rise.

Thanks - Al W, Lincoln, NE
try one of these........dupe
Nov 19, 2001 4:27 AM

and you could ask them if they can find one these in a 26.0 clamp

ciao, ben
I need something for threadless (nm)Old Man Al
Nov 19, 2001 5:06 AM
close... simple solutionxyz
Nov 19, 2001 7:52 AM
get a Nitto road bar with 25.4 clamp. You will never get the right diameter by trying to ream
close... simple solutionOld
Nov 19, 2001 9:33 AM
I like your suggestion, although Rivendell doesn't have drop-style road bars with a 25.4mm clamp. But maybe somebody else does - I just haven't looked.
I can't find road bars with a 25.4mm clamp (nm)Old
Nov 19, 2001 9:39 AM
bummer, I
Nov 19, 2001 9:49 AM
From several sources:
Nitto 115 handlebars $22.50-24.95
Nitto 105 handlebars $24.95
bummer, I can.... me, too ... nowOld Man Al
Nov 20, 2001 2:31 PM
I had checked Rivendell as the source of Nitto handlebars and failed to find any Nitto drop bars with a 25.4mm clamp - they all had 26.0mm clamps. I checked your model numbers, however, and found that Rivendell didn't carry them. I had also checked Performance, Cambria Bike and a couple of other places and found nothing with a 25.4mm clamp.

But then I looked further for Nitto components in particular and found the bars that you referenced at And, yes, they have 25.4mm clamps.

For me, one of the Nitto bars will work perfectly, but I should mention to anybody else that these appear to be the only road bars with this clamp size anywhere.
Failure Potential!!Rusty McNasty
Nov 19, 2001 6:36 AM
By 'reaming out' the clamp, you are removing metal. Are you ABSOLUTELY SURE that enough metal remains to handle the tension of the clamp blot? Can you imagine what it would be like to steer your bike should the clamp break??
I think that your best bet is to get a 25.4 bar. You can get a nitto bar in 25.4 for only about $25. A broken shoulder costs MUCH more.
here's what i did....battaglin
Nov 21, 2001 4:47 AM
I wanted a zero degree stem for my road bike, I got an OPEN clamp mtb stem, (taiwan though) AND a road version. Swapped the clamp and my 3ttt prima stem fits nicely. It's better to get the four bolt version. It could be pretty expensive if you're getting known brands, so I opted for taiwan generic stem. Hope this helps.