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Aftermarket Jockey Wheels

Old 04-27-23, 02:38 PM
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Aftermarket Jockey Wheels

Would these Jockey Wheels work on a Shimano 105, GS cage, 11-speed?
https://www.bike-components.de/en/KC...1-pair-p47936/

It says they're compatible with Shimano but not very specific. The standard jockey wheels are both different. One has an arrow to show direction and the other has a small triangle to show the correct side. But these KCNCs seem to be exactly the same. Am I going to have problems shifting gears?
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Old 04-27-23, 03:19 PM
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I would just stick with the OEM Shimano pulleys. I've used 2 different aluminum sets in the past and the teeth wore out faster than the plastic/composite versions. I'm guessing the plastic also has some built in lubrication compared with the aluminum. Shimano uses a little bit of side-to-side float on the top pulleys but IME there was little or no difference in performance with some other inexpensive pulleys that had zero float that I've used. You could also spend $400+ on some Ceramic Speed pulleys to save a watt of effort. Shimano's are cheap, last a long time and no worries if they'll work with your derailleur.

Last edited by Crankycrank; 04-27-23 at 03:23 PM.
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Old 04-27-23, 03:59 PM
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If you really want to upgrade the pulleys that come with your 105 RD, go for the Ultegra 6800 or R8000 pulley set, which have ball bearings on both pulleys; the 105 versions has one bearing and one bushing.

Pulley set (RD-6800) | SHIMANO BIKE-EU

Pulley set (RD-R8000) | SHIMANO BIKE-EU
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Old 04-27-23, 06:42 PM
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Aluminum on steel is noticeably louder than steel on plastic. Keep your old pulleys.
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Old 04-28-23, 09:53 AM
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I use Omni Racer aluminum pulleys in my Dura Ace 7700 RD, which are quite similar. Omni Racer

There is zero discernable noise increase with them, and they shift perfectly, even without the slight side-to-side play of the Shimano wheel. If the KCNC's came in silver, I'd grab a set for myself. I think they'll be fine.
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Old 04-28-23, 02:31 PM
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Originally Posted by Crankycrank
I would just stick with the OEM Shimano pulleys. I've used 2 different aluminum sets in the past and the teeth wore out faster than the plastic/composite versions. I'm guessing the plastic also has some built in lubrication compared with the aluminum. Shimano uses a little bit of side-to-side float on the top pulleys but IME there was little or no difference in performance with some other inexpensive pulleys that had zero float that I've used. You could also spend $400+ on some Ceramic Speed pulleys to save a watt of effort. Shimano's are cheap, last a long time and no worries if they'll work with your derailleur.

There's no built-in lubrication I could see. The fact is every time I spray some chain dry lube between the gaps in the centre of the jockey wheel, I notice an instant improvement in ride smoothness, like after when I lubed the chain. It's not a huge difference but it is quite noticeable and much appreciated.


Originally Posted by SoSmellyAir
If you really want to upgrade the pulleys that come with your 105 RD, go for the Ultegra 6800 or R8000 pulley set, which have ball bearings on both pulleys; the 105 versions has one bearing and one bushing.


Pulley set (RD-6800) | SHIMANO BIKE-EU


Pulley set (RD-R8000) | SHIMANO BIKE-EU

I didn't know those had bearings. In the 105 I have both pulleys have only bushing. Thanks


Originally Posted by smd4
I use Omni Racer aluminum pulleys in my Dura Ace 7700 RD, which are quite similar. Omni Racer


There is zero discernable noise increase with them, and they shift perfectly, even without the slight side-to-side play of the Shimano wheel. If the KCNC's came in silver, I'd grab a set for myself. I think they'll be fine.

That's what I wanted to hear! Thanks
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Old 04-28-23, 03:37 PM
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Originally Posted by TMassimo
There's no built-in lubrication I could see. The fact is every time I spray some chain dry lube between the gaps in the centre of the jockey wheel, I notice an instant improvement in ride smoothness, like after when I lubed the chain. It's not a huge difference but it is quite noticeable and much appreciated.
Not talking about the bearings/bushings. The teeth tend to wear down fast with aluminum.
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Old 04-28-23, 08:22 PM
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Originally Posted by TMassimo
I didn't know those had bearings. In the 105 I have both pulleys have only bushing.
The jockey wheels in my 105 RD-5800 has one bearing and one bushing; I forgot which is which. Either way, upgrading to the Ultegra pulleys is the way to go.
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Old 04-28-23, 10:15 PM
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Delrin is best for pulley wheels. That is generally what most of them are made of. The aluminum ones are louder and maybe sometimes with some nice bearings which is good but the noise of them is just not desirable. As people have said try the DA or Ultegra wheels or if you really want to go all out Enduro bearings makes some lovely Delrin ones in US and you can get them with their Ceramic hybrid bearings. However if you aren't having issues just keep running what you got.

Unless you are racing eeking out every last bit of everything is just an expensive game that does nothing. Sort of one of those "freemium" games on the cellular telephones these days where you can play for free but spending money gets you along further but the game really isn't that good and you don't go anywhere really it is more of a time waster. Not saying all games are like that though.
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Old 04-29-23, 09:16 AM
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Originally Posted by veganbikes
Delrin is best for pulley wheels. That is generally what most of them are made of. The aluminum ones are louder and maybe sometimes with some nice bearings which is good but the noise of them is just not desirable.
Mine don’t make any noise whatsoever. They’re lighter and have better bearings than the DA. Maybe they won’t last as long. We’ll see. So far there’s no downside to them.
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Old 04-29-23, 10:02 AM
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I tried replacing my 5800 105's with alum. and they were too wide causing the DR to scrape the spokes when on largest cog. I went with the Ultegra's and no problems.
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