Aluminum

The FC-R7100 is the matching 2-speed 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: Road Compatibility: Shimano 2x12-speed Chainring Mount: 110 mm bolt circle diameter, 4-arm asymmetrical Technical Information: Series: 105 R7100 Crank Arm Material: aluminium Chainring Material: aluminium / composite material (GFRP) / aluminium Axle Material: steel Gradation: 34-50 Crank Arm Length: 170.0 mm, 172.5 mm Chainline: 44.5 mm Q-Factor: 148 mm Axle Diameter: 24 mmHEADSETTUBEROTOR Shimano 105 Hollowtech II FC-R7100 2x12-Speed 50x34T 170mm/172.5mm Road Crankset The FC-R7100 is the matching 2-speed 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: Road Compatibility: Shimano 2x12-speed Chainring Mount: 110 mm bolt circle diameter, 4-arm asymmetrical Technical Information: Series: 105 R7100 Crank Arm Material: aluminium Chainring Material: aluminium / composite material (GFRP) / aluminium Axle Material: steel Gradation: 34-50 Crank Arm Length: 170.0 mm, 172.5 mm Chainline: 44.5 mm Q-Factor: 148 mm Axle Diameter: 24 mmSHIPPINGABOUTSHIPPING SHIPPINGABOUTSHIPPING FAST SHIPPING We will ship your orders within 1 business day upon payment received. SHIPPINGABOUT ABOUTSHIPPINGABOUT ABOUT ABOUT Rolling-Cycle The Rolling-cycle team is comprised of a number of individuals who have worked in the bike industry for many years and built up some great relationships with brands and suppliers. Our philosophy is that we work hard to find popular bike gear from the brands you love without having to pay a fortune for it. We are also proud to introduce our own range of quality accessories and tools that we have researched, sourced and tested from top quality manufacturers in Taiwan. Check out ‘ResQ Tools’ which is the first range we are introducing. You’ll find a variety of tools for both the workshop and to take with you on the road or trails to keep your bike in good shape. We are currently based in 2 locations and growing, the warehouse is located in Missouri USA and Sydney Australia. TIPSUM Super Light Magnesiem Platform with TItanium Axle Only 82g per Pedal Extra Gold Pin Include Now On Sale - Only US$53.9 SHOP NOW! 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