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    BOR Crank XM557 2X SmartSpindleSystem 2-speed BCD120 | 80 with Chainrings

    Item no.:
    15478

    Product weight:570g
    Manufacturer:
    BOR
    487,50 € UVP: 549,00 €
    You save 11,2 %, that is 61,50 €
    including 19% VAT. , no shipping costs
    • 1-3 days
    Color
    Length Crankarms
    Chainrings

    Article details

      BOR crank XM557 2X SmartSpindleSystem 2x LK120 | 80 with chainrings

      The XM557 crank the German manufacturer BOR based on the proven XC666. However, changes and advancements let the weight of the XM557 continue tumbling down. In detail, this means a weight-reduced Lockring fixed optimized Spider. The crank arms have been calculated once again and could lose a few grams. The arms are mounted on an aluminum shaft with 30 mm diameter to meet even most powerful sprinter with excellent rigidity.
      BOR typically comes also the proven Smart Spindle System is used, which makes it possible to build the crank in almost any context. Furthermore, even the Spider can replace. The crank is therefore prepared for any future changes.

      The CNC machined chainrings BOR aluminum are hardened in a special process with a glass mount peening and then anodized with double the usual thickness. This Double Surface Treatment gives the leaves a significantly increased shelf life!
      The size chainring has various switching ramps and -gassen, providing a fast and reliable switching operation.

      Made in Germany!


      Technical specifications:

      intended use: Cross Country, Marathon, Tour
      Material: alumnium (7022, 7010, 7051)
      Crank arm: 170 mm, 175 mm (165 mm and 172.5 mm on request)
      Shaft: 30 mm diameter
      Q: 164 mm
      Chainring spider: 2-fold with LK 120 | 80 mm
      chain line: 49.5 mm
      Bottom bracket: BSA, BB89,5 / BB92, BB30, PF30, BBright MTB, BB386 EVO MTB (optional)
      Chainring: 36 - 24, 38-25, 40-26 or 42-27 teeth
      Compatibility chain: 10x
      Color crank arms: black
      Color Spider / crank bolt: black, orange, red, blue or acid green

      Weights without bottom bracket:

      570g 36-24 teeth
      580g 38-25 teeth
      590g 40-26 teeth
      600g 42-27 teeth


      Delivery: crank arm left / right shaft chainring spider, chainrings, Locknut

      Note: a frame corresponding internal stock must be purchased separately. All
      Variations and more, you'll find in our extensive shop offer.


      Product weight:570g
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