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Four Arm Design Two Chainring Combinations: 52/36t And 50/34t One Single Crank Design for Both Chainring Combinations Optimized Inner Surface on Both Cranks Ultra-Torque Axle
Four Arm Design Two Chainring Combinations: 52/36t And 50/34t One Single Crank Design for Both Chainring Combinations Optimized Inner Surface on Both Cranks Ultra-Torque Axle