5-bolt 110bcd Compact chainrings for Di2: Older Shimano 6600 (not designed for Di2)? SRAM X GlideR rings? Praxis rings?
Praxis
Rotor NoQs are what I'd recommend. I've had issues with Di2 and Praxis rings.
@hippy started
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5-bolt 110bcd Compact chainrings for Di2:
Older Shimano 6600 (not designed for Di2)?
SRAM X GlideR rings?
Praxis rings?