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Spider with Quarq Dzero power meter for mountain bike compatible with Sram XX1 Eagle Boost cranks. For 104BCD chainrings.
Quarq Dzero road spider with power meter compatible with Specialized Carbon cranks. For mounting with 130BCD chainrings.
Quarq Dzero road power meter spider compatible with DUB bottom brackets and 110BCD chainrings. It is mounted using 8 screws on the Quarq cranks.