48T Chainrings for Shimano 12sp cranks????

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tyro13
Posts: 69
Joined: Mon Nov 21, 2011 7:21 am

by tyro13

Does anyone know if there are any aftermarket chainrings compatible with the dura ace or ultegra 12 sp (9200) crankset? I'm looking for a 48 tooth chainring for my son's bike who is required to ride with 48t for the competition in Belgium. On 11sp crank you can use stronglight or specialties Ta. I now wonder if these can also be mounted on the 12sp crank.

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jayjay
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by jayjay

I think you can use the 48/31 GRX crank

Ritxis
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by Ritxis

tyro13 wrote:
Tue Dec 06, 2022 9:14 am
Does anyone know if there are any aftermarket chainrings compatible with the dura ace or ultegra 12 sp (9200) crankset? I'm looking for a 48 tooth chainring for my son's bike who is required to ride with 48t for the competition in Belgium. On 11sp crank you can use stronglight or specialties Ta. I now wonder if these can also be mounted on the 12sp crank.
surely you could mount the auxiliary brands for Shimano 4 arms...Speclalites TA, Stronghlight and others.............

tyro13
Posts: 69
Joined: Mon Nov 21, 2011 7:21 am

by tyro13

Ritxis wrote:
Tue Dec 06, 2022 11:32 am
tyro13 wrote:
Tue Dec 06, 2022 9:14 am
Does anyone know if there are any aftermarket chainrings compatible with the dura ace or ultegra 12 sp (9200) crankset? I'm looking for a 48 tooth chainring for my son's bike who is required to ride with 48t for the competition in Belgium. On 11sp crank you can use stronglight or specialties Ta. I now wonder if these can also be mounted on the 12sp crank.
surely you could mount the auxiliary brands for Shimano 4 arms...Speclalites TA, Stronghlight and others.............

Are you sure on the new 9200 cranks??? I know it's possible on 11sp cranks 9100(my son ride with it)

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ms6073
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by ms6073

tyro13 wrote:
Tue Dec 06, 2022 9:14 am
I'm looking for a 48 tooth chainring for my son's bike who is required to ride with 48t for the competition in Belgium.
Isn't that requirement only in effect until the end of the year since the UCI is eliminating junior gear restrictions? To answer your question, what about Absolute Blacks Sub-Compact chaingrings which are oval but come in a 48/32 combo.
- Michael
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Magnetize6932
Posts: 12
Joined: Wed Oct 12, 2022 5:46 pm

by Magnetize6932

Many pro teams were using 9100 cranks with the rest of the 9200 drivetrain before the pro-size chainring sizes were readily available. There still isn't a 55t 9200 chainring, so imagine some riders are still using their 9100 chainrings in time trials. So if you have an existing 11-speed crankset with the right chainrings just use that.

tyro13
Posts: 69
Joined: Mon Nov 21, 2011 7:21 am

by tyro13

ms6073 wrote:
Tue Dec 06, 2022 4:54 pm
tyro13 wrote:
Tue Dec 06, 2022 9:14 am
I'm looking for a 48 tooth chainring for my son's bike who is required to ride with 48t for the competition in Belgium.
Isn't that requirement only in effect until the end of the year since the UCI is eliminating junior gear restrictions? To answer your question, what about Absolute Blacks Sub-Compact chaingrings which are oval but come in a 48/32 combo.
For U17 riders it's 48x14
For U19 Junior UCI Races gear is free, But in Belgium and Netherlands it's 52X14 for local races. So for U19 riders there's no problem you can use standard 52-36 chainrings.

tyro13
Posts: 69
Joined: Mon Nov 21, 2011 7:21 am

by tyro13

What I've heard is that you can mount 9200 chainrings on 9100 but not the other way around. And that is exactly what my question is, can an aftermarket chainring such as stronglight or Ta for 9100 DA or 8000 ultegra (which are provided for 9100 cranks) on a 9200 DA crank? Because i need a 48t chainring for U17 rider in Belgium

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Ritxis
Posts: 964
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by Ritxis

tyro13 wrote:
Wed Dec 07, 2022 8:57 am
What I've heard is that you can mount 9200 chainrings on 9100 but not the other way around. And that is exactly what my question is, can an aftermarket chainring such as stronglight or Ta for 9100 DA or 8000 ultegra (which are provided for 9100 cranks) on a 9200 DA crank? Because i need a 48t chainring for U17 rider in Belgium
Yes, if possible.......the incompatibility of chainrings R8000/9100 vs. R8200/R9200 comes from the chainring-crank integration


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