SHIMANO - Square Type Bottom Bracket - MTB - Standard Structure

Square Type Bottom Bracket

68 x 122.5mm w/o Bolts / BB - UN300

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

 

MODEL NO	BB-UN300
SERIES	SHIMANO
Remarks	* w/ Crank arm fixing bolts spec. only ** w/ Crank arm fixing bolts spec. is available
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	✔