Shimano - SM-BB71-41B Bottom Bracket-Pressfit Gloves The Spark RC Team is

The Spark RC Team is the perfect blend of top-notch carbon engineering

Our water-soluble Bio Degreaser quickly and safely eliminates built-up oil

Not only in the laboratory

thanks to the improved hydrophobic material to limit moisture retention

- Mixed terrain tyre

Shimano - SM-BB71-41B Bottom Bracket-Pressfit Gloves The Spark RC Team isShimano SM BB71 41B is a press fit bottom bracket for the installation of a Hollowtech II compatible crank into a road frame with 86. 5 mm case width. Per usual with Hollowtech II, the bearings have a diameter of 24 mm, as this gives the best combination of rotational efficiency, stiffness, load capacity, tightness and weight even with press fit bearings. SM BB71 41B bottom brackets are recommended for older 10 speed road and cyclocross cranks.