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  • The quality and performance-oriented Shimano BB-UN300 cartridge bearing bottom bracket features a JIS square taper mount and is designed for frames with BSA thread and 68/73 mm shell width. A stabilizer ensures a constant chain line.
  •  
  • Features :
  • -Fits JIS square-taper cranksets
  • -Crankarm fixing bolts sold separately
  • -Hollow spindle
  • -Adapter: aluminium (left), aluminium / steel (right)
  • -Axle: steel

SHIMANO IS THE MOST TRUSTED BRAND TO CHOOSE YOUR VALUABLE COMPONENTS IN THE WORLD OF CYCLING!

SPECIFICATIONS

FEATURE SPEC

MODEL NO

BB-UN300

SERIES

TOURNEY TX800 Series

Spindle_Square type

βœ”

Structure_Standard

βœ”

  • Shimano is a Japanese multinational manufacturer of cycling components. Its products include drivetrain, brake, wheel, and pedal components for road, mountain, track, and hybrid bikes. At Shimano, they strive for the very best. That’s why they have been passionate about technology from the very beginning.

    Through technological innovations, they had created products that verge on perfection, products that offer you greater efficiency, increased durability, better ease of use, and ultimate comfort. All Shimano staff - whether in R&D, production, or quality control - go to great lengths to develop cutting-edge equipment that is lightweight yet sturdy, fast, and reliable. Their passion for technology inspires them to push the boundaries of what is thought possible.

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