• 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
• Structure_Standard    ✔
• Axle length/shell width (mm)_107_68 (BC1.37)    ✔
• Axle length/shell width (mm)_LL113_73 (BC1.37)    ✔
• 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    ✔
• 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)    ✔
• Axle length/shell width (mm)_LL123_73 (BC1.37)    ✔
• Axle length/shell width (mm)_LL113_68 (BC1.37)    X **
• Axle length/shell width (mm)_MM110_68 (BC1.37)    X **
• Spindle_Square type    ✔

NOTE/REMARKS:
* w/ Crank arm fixing bolts spec. only
** w/ Crank arm fixing bolts spec. is available