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Product Description Shimano 105 FC-R7100 2x12-speed Crank - Highly efficient and amazingly lightweight The FC-R7100 is the matching 2x crank for the 105 R7100 12-speed groupset from Shimano and brings maximum power transfer efficiency to your road bike. At the same time, shifting is as fast and precise as usual. The crank weighs only about 50 grams more than the comparable Ultegra model, which is mainly due to the hollow-formed aluminium crank arms. Thanks to the Hollowtech II design, which has been tried and tested for years, with a fixed 24 mm axle, the ratio of stiffness, performance and weight is just right. The small chainring is made entirely of aluminium, while durable composite is also used on the large chainring. FC-R7100 has an asymmetrical 4-arm bolt circle diameter of 110 mm. It produces a chainline of 44.5 mm and has a Q-factor of 148 mm. Specifications:Application:RoadCompatibility:Shimano 2x12-speedChainring Mount:110 mm bolt circle diameter, 4-arm asymmetricalTechnical Information:Series:105 R7100Crank Arm Material:aluminiumChainring Material:aluminium / composite material (GFRP) / aluminiumAxle Material:steelGradation:34-50Crank Arm Length:160.0 mm, 165.0 mm, 170.0 mm, 172.5 mm, 175.0 mmChainline:44.5 mmQ-Factor:148 mmAxle Diameter:24 mmCompatible BSA Shell Width:68 mmRecommended Bottom Bracket:SM-BBR60 or SM-BB72-41B Press Fit Hollowtech II (not included)Recommended Chain:CN-M7100Compatibility:2x12-speed: Shift/Brake Lever:ST-R7120, ST-R7170, ST-R8150, ST-R8170, ST-RX820, ST-RX610, ST-R8060, ST-R9250, ST-R9270, ST-R9160, ST-R9180Front Derailleur:FD-R7100, FD-R7150, FD-R8150, FD-R9250Bottom Bracket:BB-R9100, SM-BB9000, SM-BBR60, SM-BB6700, SM-BB5700, BB-RS501, BB-RS500, SM-BB4600, SM-BB92-41B, SM-BB72-41B, SM-BB71-41B, BB-RS500-PBChain:CN-M8100, CN-M9100, CN-M7100, CN-M6100Features:perfect balance between stiffness, stability, weight and rotational efficiencyoptimised power transferfast, high-precision shifting at the fronthollow crank arms (Hollowtech)anodised crank arms and chainringsstainless steel chainring boltsTechnology:Hollowtech II Shimano Hollowtech II is a crank bottom bracket system designed to achieve an ideal ratio of stiffness, weight and rotational efficiency. It is based on an integration of the bottom bracket and the right crank arm and works with a 24 mm axle or bearing diameter, which has proven to be optimal in terms of stability. In many cases, the bearing cups are on the outside so that the load is better distributed. High-quality precision seals ensure a long service life. Manufacturer Numbers:160.0 mm 34-50:IFCR7100MX04165.0 mm 34-50:IFCR7100AX04170.0 mm 34-50:IFCR7100CX04172.5 mm 34-50:IFCR7100DX04175.0 mm 34-50:IFCR7100EX04Contents:1 x Shimano 105 FC-R7100 crankset (34-50 tooth)1 x Shimano crank bolt Weight: black | 170,0 mm | 34-50: 754 g Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com