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Essential Chainring boltsYou must have these bolts to use a 46 tooth Shimano Ultegra 6800 chainring. Each bolt is very specific to its location on the crank. These require a star wrench to install.
These are great bolts, but expensive.
They should come with the 46 tooth chainring.
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Shimano Ultegra 6800 Outer Chainring Bolt and Cap Set of 8
your price $38.99 + ships free
Buy PART NUM 645988
