Feature(may vary by option.)

●High quality, high performance cartridge bearing square bottom bracket.Crank mounting bolts sold separately.
●Type: Standard.
●Spindle Material: Steel.
●Adapter Material: Aluminum. Shell Material: Steel.
●Sizes (shell width x axle length): 2.7, 2.9 inches (68, 73 mm) = BSA/JIS/BC1.37, BSA 2.7 x 4.2 inches (68 x 107 mm), BSA 2.7 x 4.3 inches (68 x 110 mm), BSA 2.7 x 4.4 inches (68 x 113 mm), BSA 2.7 x 4.6 inches (68 x 117.5 mm), BSA 2.7 x 4.6 inches (68 x 118 mm) (XL), BSA 2.7 x 4.8 inches (68 x 122.5 mm) (D-NL), BSA 2.7 x 4.8 inches (68 x 122.5 mm) (LL123), BSA 2.9 x 4.4 inches (73 x 113 mm) (D-NL), BSA 2.9 x 4.6 inches (73 x 118 mm) (XL), BSA 2.9 x 4.8 inches (73 x 122.5 mm) (LL123).


Description

Shimano high quality, high performance cartridge bearing square bottom bracket.
Better chainline stability with chain line stabilizer.
Three types to choose from: Standard, E-type, K type (chain case compatible).
Adapter Material: Aluminum.