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  • Box Extremum External Bottom Bracket in black at Albe's BMX Bike Shop Online

Product Description

The Box Extremum External Bottom Bracket is made to fit frames with euro bottom bracket shells and cranks with 24mm spindles.  The Bearings are titanium coated and seals are low friction to makes thing spin fast and help get all your power to the ground.

  • Fits Euro BB shells
  • Fits 24mm, 2 piece, SHIMANO Hollowtech Style - SHIMANO DXR, CRUPI RHYTHM, DK FLASH, SINZ ELITE XXX, CLIQ and many more
  • includes forged Aluminum cups, integrated internal spacer, 3 aluminum color matched cup spacers
  • Weight = 3.45 oz / 97.8 gr.