The Quarq DFour DUB Power Meter was designed specifically for Dura-Ace R9100 chainrings so you can train precisely using a Quarq power meter without changing your drivetrain.
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Our complete inventory is available at our warehouse store located just of I-205 one exit south of PDX airport.
5741 NE 87th Ave(I-205 exit 23B)Portland, OR 97220
Tue-Sat: 9am - 5pmMon: Will-Call OnlySunday: Closed
Customer Service HoursMon-Sat: 8am - 5pm PT
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