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This Shimano Ultegra 6800 11-Speed chainring is a 110mm BCD 39T inner ring and is intended for a 53/39 chainring setup.
. Teeth: 36
. Chainring BCD: 110 Asym
. Bolts: 4
. Configuration: 53/39T
. Ring Position: Inner
. Material: Aluminium
. Colour: Dark Grey
. Chain Compatibility: Shimano 11 speed