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Group: Ultegra FC-R8100
Gear: 2x12-speed
Suitable for: FC-R8100 / FC-R8100-P
Bolt Circle: 110mm
Gear arms: 4-arm
Gradation: Type NH (for 52-36T)
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Shimano is a Japanese component manufacturer that since 1921 has been one of the world’s largest suppliers of bicycle drivetrains, brakes and cycling-specific parts. Shimano groupsets — from Tourney for city bikes to top-tier Dura-Ace — are found on virtually every serious bike brand. The company also makes fishing tackle and rowing components.