SHIMANO | SHIMANO 105 R7100 2X12Speed HOLLOWTECH II Crankset 2x12-Speed 165MM 170MM 50-34T for Road Bike Original Parts

Note:If you choose the "Without BB",there is no bottom bracket in the set you buy.If mind,please do not buy.SHIMANO 105 HOLLOWTECH II Crankset 2x12-speedFC-R7100An attractive aluminum crank with hollow arms for lightweight, rigidity, and durabilityThe newly designed crank arms offer an optimized balance between lightweight and efficiency. The crank, formed with hollow aluminum technology, is anodized with a beautiful gloss black anodized finish, giving it a luxurious look. The resin ribs on the back of the chainrings are SHIMANO 105's unique structural design that achieves both thorough weight reduction and crisp shifting performance.FEATURESOptimal balance of stiffness, strength, weight and rotational performanceHOLLOWTECH II structure cuts weight yet maintains strength for better power transferCrank arm length: 160, 165, 170, 172.5, 175 mmGear combination: 50-34T, 52-36TQ-factor: 148 mmPRODUCT SPECIFICATIONSMODEL NO FC-R7100SERIES SHIMANO 105 R7100 Di2 SeriesColor BlackAverage weight 754 (50-34T)Rear speeds 12Compatible chain HG 12-speedChain line (mm) 44.5P.C.D. (mm) 110Spider/gear arms 4Chainring combination 50-34T, 52-36TQ-factor (mm) 148Crank arm length (mm)|160 ✔Crank arm length (mm)|165 ✔Crank arm length (mm)|170 ✔Crank arm length (mm)|172.5 ✔Crank arm length (mm)|175 ✔Optional chain guard|Without chain/bash guard ✔HOLLOWTECH II ✔HOLLOWTECH crank arm ✔Compatible bottom bracket type|Outboard ✔Recommended bottom bracket|Threaded (normal) SM-BBR60Recommended bottom bracket|Press-Fit SM-BB72-41BThreaded bottom bracket shell width (mm)|68 ✔Threaded bottom bracket shell width (mm)|70 ✔Crank fixing screw included ✔TECHNOLOGIEShollowtechSHIMANO ULTEGRA Threaded Bottom Bracket 68/70 mm shell widthSM-BBR60SHIMANO 105 - Bottom Bracket - Threaded - HOLLOWTECH II - 68/70 mm shell widthWith reliable SHIMANO bearings and seals, the SHIMANO ULTEGRA bottom bracket has a long service life.PRODUCT SPECIFICATIONSMODEL NO SM-BBR60SERIES SHIMANO 105 R7000 SeriesAverage weight 77HOLLOWTECH II bottom bracket|Threaded bottom bracket type ✔Threaded bottom bracket shell width (mm)|68 ✔Threaded bottom bracket shell width (mm)|70 ✔Small ball bearing ✔TECHNOLOGIEShollowtechSHIMANO 105 Press Fit Bottom Bracket 86.5 mm shell widthSM-BB71-41BSHIMANO 105 - Bottom Bracket - Press Fit - HOLLOWTECH II - 86.5 mm shell widthWith reliable SHIMANO bearings and seals, the SHIMANO 105 bottom bracket has a long service life.PRODUCT SPECIFICATIONSMODEL NO SM-BB71-41BSERIES SHIMANOTECHNOLOGIESpress_fit_bottom_bracket