Quarq has released the Quarq DFour91 power meter, as well as a new Quarq DZero power meter, extending its support for Specialized S-Works carbon cranksets
New Quarq DFour91 power meter: more accurate and specific to Shimano Dura-Ace R9100
Quarq has released the Quarq DFour91 power meter, as well as a new Quarq DZero power meter, extending its support for Specialized S-Works carbon cranksets