A good quality bottom bracket for traditional chainsets constructed with super-accurate bearings for smooth operation & enhanced durability.
FEATURES
SHIMANO quality/performance cartridge bearing square bottom bracket
Better chainline stability with chain line stabilizer
3 structures available
Standard E-type chain case options
Adapter
Material: Aluminum
PRODUCT SPECIFICATIONS
MODEL NO
BB-UN300
SERIES
TOURNEY A070 Series
Remarks
* w/ Crank arm fixing screws spec. only ** w/ Crank arm fixing screws spec. is available
Structure_ Standard
&10004;
Axle length/shell width (mm)_107_68 (BC1.37)
&10004;
Axle length/shell width (mm)_LL113_73 (BC1.37)
&10004;
Axle length/shell width (mm)_D-H_68 (BC1.37)
X *
Axle length/shell width (mm)_117.5_68 (BC1.37)
X **
Axle length/shell width (mm)_XL118_68 (BC1.37)
X **
Axle length/shell width (mm)_XL118_73 mm
&10004;
Axle length/shell width (mm)_D-NL 122_68 (BC1.37)
X **
Axle length/shell width (mm)_D-NL 122_73 (BC1.37)
X *
Axle length/shell width (mm)_D-EL 127_68 (BC1.37)
X *
Axle length/shell width (mm)_LL123_68 (BC1.37)
&10004;
Axle length/shell width (mm)_LL123_73 (BC1.37)
&10004;
Axle length/shell width (mm)_LL113_68 (BC1.37)
X **
Axle length/shell width (mm)_MM110_68 (BC1.37)
X **
Spindle_ Square type
&10004;