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Quarq DFour DUB Power Meter 
ROTOR 110×4 Oval Chainrings for Shimano 
absoluteBLACK Premium Oval Chainrings for Shimano 8000/9100 Yes, you can! We have both ROTOR and absoluteBLACK oval chainrings, which use the same 110×4 BCD as Quarq DFour. These oval rings look and work well when mounted to the DFour.
Yes, you can! We have both ROTOR and absoluteBLACK oval chainrings, which use the same 110×4 BCD as Quarq DFour. These oval rings look and work well when mounted to the DFour.
Are there any aero 1x chainrings that will mount to the Quarq dfour? I love the power meter but would really like to be able to run some aero 1x chainrings in 48-50t sizes.
Hi and thanks for the question. Unfortunately, nothing that ticks all those boxes. The closest is the Alugear 9200 1X, but it is not compatible with the Quarq DFour.
Thanks,