Any change in jockey/pulley wheels for Shimano 12-speed road?

[andreas]

I'm preparing to add some colors to a bike I have on order, that comes with the Ultegra Di2 R8100 groupset.

Amongst the things I want to change is the pulley wheels, but I'm unsure whether Shimano changed the specs - they offer a new part number ( WP-Y3J198010 ) for their 12 speed ultegra road group, they still look to have 11 teeth, but maybe a bit slimmer central body?

New
https://bike.shimano.com/en-EU/product/ ... 98010.html
Old
https://bike.shimano.com/en-EU/product/ ... 98010.html

I was thinking of replacing them with something like Hope or KCNC aluminum pulley wheels

https://www.hopetech.com/products/drive ... ey-wheels/

https://www.kcnc.com.tw/allproducts_detail_158.html

So, anyone know if these will be compatible with the 12-speed ultegra groupset?

Also, is there a point to chosing pulley wheels with more teeth? Like 13t f.ex.

[BadBoyR]

Did you manage to get something?

[Mocs123]

The watt savings from aftermarket and oversized pulley wheels are very minimal, though you may be going for the looks. One thing I will add though is I've found aluminum or metal jockey wheels can be quite a bit louder than the plastic versions.

[MysticRiver]

12 speed jockey wheels are not compatible with 11 speed. the wheel thickness is different.

[BadBoyR]

The watt savings from aftermarket and oversized pulley wheels are very minimal, though you may be going for the looks. One thing I will add though is I've found aluminum or metal jockey wheels can be quite a bit louder than the plastic versions.

Yes, it’s just the look and to add a bit of colour. The ones which I did have are not compatible with 12speed even though they were advertised as such.


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