4iiii - Dual Side Precision 3+ Pro Dura-Ace R9200 Power Meter Stock Item:4iiii PRECISION 3+ PRO POWER METER - DUAL SIDE DURA-ACE 9200 172.5mm 52/36T Computational Fluid Dynamic design integrates
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4iiii Dual Side Precision 3+ Pro Dura Ace R9200 Power Meter Stock Item:4iiii PRECISION 3+ PRO POWER METER DUAL SIDE DURA ACE 9200 172.5mm 52 36T Computational Fluid Dynamic design integrates Computational Fluid Dynamic design integrates the maximum volume of internal channeling for optimal airflow through the helmet quick refill