Square Type Bottom Bracket

BB-UN300-K NEW

ALIVIO_M3100_2021_s1_l

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 SHIMANO ALIVIO M3100 Series

SERIES LINE-UP

  • Shifting Lever SHIMANO ALIVIO RAPIDFIRE PLUS Shifting Lever 3x9-speed
  • Shifting Lever SHIMANO ALIVIO RAPIDFIRE PLUS MONO Shifting Lever 2x9-speed
  • Bottom Bracket Square Type Bottom Bracket
  • Bottom Bracket Square Type Bottom Bracket