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Ultegra 9 spd. triple 39 ring ?

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Ultegra 9 spd. triple 39 ring ?

Old 01-08-19, 05:40 PM
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Steve B.
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Ultegra 9 spd. triple 39 ring ?

I've searched, didn't find anything

I've got an Ultegra 9 spd. system, with the Ultegra triple crank. Maybe the 6500 group, not sure.

The middle ring is done and needs replacing. Odd thing is all the reading I can find tell me this was a 30-42-52 crank, yet I've counted the teeth on the middle ring and it's a 39.

Thus I'd like to source a replacement, but need a ring with the ramps and pins to allow the system to work correctly.

Any thoughts on a source for that ring, appreciated.
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Old 01-08-19, 06:01 PM
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Old 01-08-19, 06:04 PM
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39 tooth would be the small/inner ring for a Shimano 6500 double, or really any standard double. Is the current 39t ring actually ramped/pinned? The 39 off a double wouldn't be, it might have a couple cut teeth at best.

9spd Dura-ace had some odd gear combos on the triple, quick googling says it was 53/39/30. So you might be looking for a Dura-ace 9spd middle ring, not sure if anybody else made one.

Edit: Well there you go, that link has a 39t middle. Also this is the Dura-ace ring set, but It looks pretty beat up: https://www.ebay.com/itm/Shimano-Dur...e602:rk:4:pf:0

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Old 01-08-19, 06:46 PM
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Update:

Photo of the large ring, a 52 tooth in 130BCD and a photo of the crank L arm.

I see 6603, so will try to source that and Yes, it’s a ramped/pinned middle ring. I’ll likely replace the 52 as well, the small is a replacement 26
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Old 01-08-19, 06:55 PM
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Ultegra 6600 would be 10spd I think, 9 and 10 should be interchangeable for cranks/rings so you're fine if everything else is 9spd.

Looks like 6600 was the same 53/39/30 setup, you could look for that middle ring as direct replacement. If you throw Shimano 39t triple in ebay you actually get some good results: https://www.ebay.com/sch/i.html?_fro...LH_TitleDesc=0

Last edited by wesmamyke; 01-08-19 at 07:03 PM.
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Old 01-08-19, 07:05 PM
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Originally Posted by wesmamyke View Post
Ultegra 6600 would be 10spd I think, 9 and 10 should be interchangeable for cranks/rings so you're fine if everything else is 9spd.

Looks like 6600 was the same 53/39/30 setup, you could look for that middle ring as direct replacement. If you throw Shimano 39t triple in ebay you actually get some good results: https://www.ebay.com/sch/i.html?_fro...LH_TitleDesc=0
Yes, when I took the photo I could now see itís a 10 speed crank. I built this bike 9 years ago and have no clue how I ended up with a 10 spd crank with the rest as 9.
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Old 01-08-19, 07:19 PM
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Old 01-08-19, 07:53 PM
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Those Shimano 3x9 drivetrains shift so great with the right rings, but unfortunately replacements are becoming almost impossible to find. I just bought one of these to put in my inventory for backup: https://www.rei.com/product/778838/s...130mm-39-teeth

I suggest that you do the same before they are gone. Good luck.
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Old 01-08-19, 07:59 PM
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Recently I was in the same situation as you: a worn-out middle ring on a road triple. Although mine was on a Craigslist-purchased bike that was not nearly as in as bad shape as yours. Wow!

So a few seconds later I had a 9-speed Sora unit ordered on Chain Reaction for like $13. Works great. Steel, so adds a few grams, but the middle ring on triples always takes the brunt of drivetrain wear.
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Old 01-08-19, 08:23 PM
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Originally Posted by reburns View Post
Those Shimano 3x9 drivetrains shift so great with the right rings, but unfortunately replacements are becoming almost impossible to find. I just bought one of these to put in my inventory for backup: https://www.rei.com/product/778838/s...130mm-39-teeth

I suggest that you do the same before they are gone. Good luck.
Done. Ordered 2

Thx for that link
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Old 01-09-19, 08:32 AM
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Originally Posted by reburns View Post
Those Shimano 3x9 drivetrains shift so great with the right rings, but unfortunately replacements are becoming almost impossible to find. I just bought one of these to put in my inventory for backup: https://www.rei.com/product/778838/s...130mm-39-teeth
Thanks! ordered one for when I need it some day
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