The Aero Cover Bolts for Shimano 110x4 BCD Cranks from Rotor are uniquely designed for Shimano 4 bolt Dura Ace 9100/9000 and Ultegra 6800/8000 cranksets. This set of cover bolts improves overall aerodynamics and provide a clean edge for fitting QXL chainrings to a Shimano 4 bolt crank arm. This set includes 4 chainring bolts and 4 covers.
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