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Did Shimano ever make drop bars 25.4, 22.2?

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Did Shimano ever make drop bars 25.4, 22.2?

Old 01-19-24, 01:38 PM
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Did Shimano ever make drop bars 25.4, 22.2?

I see they did make Shimano 600 stems, Ultegra I guess but did they make drop bars? Thanks.
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Old 01-19-24, 02:14 PM
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Originally Posted by BikePower
I see they did make Shimano 600 stems, Ultegra I guess but did they make drop bars? Thanks.
There were Shimano-branded road bars, but just like the stems they were made by Nitto.

I can't recall if Shimano-branded bars appeared below the Dura-Ace level however, none are common to find.

Shimano's aero stems were offered in both 25.4 and 26.0 clamping diameters.
I have found that Shimano's stems seem to easily fit over Cinelli 26.4mm bars in the a few cases I've tried, and relatedly that certain Ambrosio bars and stems are also sized at 26.4mm clamping diameter.

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Old 01-19-24, 02:35 PM
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Originally Posted by BikePower
I see they did make Shimano 600 stems, Ultegra I guess...
Just "600" or "600 AX." The nicest ones are the Dura Ace ones, however.
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Old 01-19-24, 02:53 PM
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Originally Posted by dddd
There were Shimano-branded road bars, but just like the stems they were made by Nitto.

I can't recall if Shimano-branded bars appeared below the Dura-Ace level however, none are common to find.

Shimano's aero stems were offered in both 25.4 and 26.0 clamping diameters.
I have found that Shimano's stems seem to easily fit over Cinelli 26.4mm bars in the a few cases I've tried, and relatedly that certain Ambrosio bars and stems are also sized at 26.4mm clamping diameter.
They fit over the Cinelli bars and still fit the 25.4 nitto bars? ooop UPS is here!!!!
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Old 01-19-24, 04:29 PM
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Originally Posted by BikePower
I see they did make Shimano 600 stems, Ultegra I guess but did they make drop bars? Thanks.
Both of my 1983 Miyatas, Team and Pro have the Dura-Ace AX HD-7300 bars along with matching stems.
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Old 01-19-24, 07:01 PM
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Originally Posted by BikePower
They fit over the Cinelli bars and still fit the 25.4 nitto bars? ooop UPS is here!!!!
My DA stem works perfectly with 25.4 mm Cinelli bars.

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Old 01-19-24, 07:14 PM
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There are two bar diameter stem inserts for the two sizes of Shimano stem clamps iir, and I think I tested both the 25.4 and 26.0 versions on Cinelli 26.4mm bars.

Probably best to stick with the 26.0 version for the Cinelli bars, I dunno. I only say this because Cinelli 1R stem inserts have a tendency to get cracked somehow, and I wonder if bar diameter mis-fits perhaps had anything to do with that(?). In any case, the bars do of course somewhat conform to the clamp under tightening loads.
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Old 01-19-24, 07:36 PM
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Originally Posted by dddd
There are two bar diameter stem inserts for the two sizes of Shimano stem clamps iir, and I think I tested both the 25.4 and 26.0 versions on Cinelli 26.4mm bars.
Yep, the manual shows two different part numbers for the two sizes.
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Old 01-19-24, 07:39 PM
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Originally Posted by smd4
My DA stem works perfectly with 25.4 mm Cinelli bars.
I have always thought the late Cinelli bar collar size was 26.0, just like the late stems. With some tolerance of course.
25.4 mm Cinelli bars are a surprise to me.
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Old 01-19-24, 07:43 PM
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Me too! I spent the last 15 minutes checking and rechecking with my analog caliper. Thinking to myself, am I reading this thing correctly? I set it at 26 and it rattles back and forth.

Iíll get a new battery for the digital caliper tomorrow and try to post a pic with the calipers on the bar.
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Old 01-19-24, 07:58 PM
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Originally Posted by repechage
I have always thought the late Cinelli bar collar size was 26.0, just like the late stems. With some tolerance of course.
25.4 mm Cinelli bars are a surprise to me.
This is the best I could do holding both the phone and the caliper, trying to keep the "Cinelli" in the frame as well. I need more hands. I'll use the digital tomorrow.
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Old 01-22-24, 05:17 PM
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Originally Posted by repechage
25.4 mm Cinelli bars are a surprise to me.
So do I have some anomaly? These bars have the indentations front and back for under the tape cable routing.

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Old 01-22-24, 09:39 PM
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Originally Posted by smd4
So do I have some anomaly? These bars have the indentations front and back for under the tape cable routing.

ya thats wierd.

Heres mine
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Old 01-23-24, 07:17 AM
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Originally Posted by BikePower
ya thats wierd.
So I guess Sheldon goofed on this one...
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