SHIMANO SM-BB71-41B PRESS FIT BOTTOM BRACKET
Shimano SM-BB71-41B is a pressfit bottom bracket for installing a Hollowtech II crank in a road frame with a housing width of 86.5 mm. As usual with Hollowtech II, the bearings are 24 mm in diameter because this gives the best combination of rotational efficiency, rigidity, resilience, tightness and weight, even with press-fit bearings. SM-BB71-41B bottom brackets are recommended for older 10-speed road and cyclocross cranks.
SPECIFICATIONS:
APPLICATION: ROAD, GRAVEL
SERIES: ULTEGRA, 105, TIAGRA, GRX
INSTALLATION TYPE: PRESSFIT BB86
DIAMETER: 41MM
HOUSING WIDTH: 86.5MM
AXLE DIAMETER: 24 MM (HOLLOWTECH II)
BEARINGS: STEEL
BOTTOM BRACKET SHELL MATERIAL: SYNTHETIC RESIN
