Square Type Bottom Bracket

BB-UN300-K NEW

TOURNEY-TZ_TZ500_m

BB-UN300-K NEW

SHIMANO - Square Type Bottom Bracket - MTB - Chain Case Structure

Square Type Bottom Bracket

  • 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-K
SERIES TOURNEY TZ500 Series
Remarks * w/ Crank arm fixing bolts spec. only. ** w/ Crank arm fixing bolts spec. is available. *** w/ 0.7 mm spacer
Structure_For chain case
   
Axle length / shell width_117.5_68mm_(BC1.37)
Axle length / shell width_D-NL (122.5mm)_68mm_(BC1.37) X **
Axle length / shell width_D-EL (127.5mm)_68mm_(BC1.37)
Axle length / shell width_LL123_68mm_(BC1.37) X ***
Axle length / shell width_MM110_68mm_(BC1.37)
Spindle_Square type

SERIES LINE-UP

  • Bottom Bracket Square Type Bottom Bracket
  • Rear Derailleur SHIMANO TOURNEY Rear Derailleur 3x6/7-speed
  • Shifting Lever REVOSHIFT Shifter DUAL SIS INDEX 3-speed
  • Shifting Lever REVOSHIFT Shifter SIS INDEX 7-speed