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53x39 Standard Chain Ring, 165 Arm Length

USD$ 1,299.99
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Item # SGY91-5339-165
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Dura-Ace 9100 Power Meter

Left & Right Crank-Arm Strain Gauges for ForceMeasurement

Force Vector display when used with Pioneer's Cycle Computer

Also compatible with Non-Pioneer Ant+ Cycle Computers Standard

Mid-Compact & Compact Cranksets available