Absolute Black Bolt Covers for Dura-Ace 9100 and 9150 2020

48,90 €
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Absoluteblack premium bolt covers are designed specifically for Shimano 110/4bcd Dura-Ace 9100 and 9150 Di2 cranks. They cover the small step down between chainring and crank arms, completing the entire look of the crank. With these covers your crank looks great again.


  • Compatibility: Dura-Ace 9100 and 9150 Di2 cranks. Both sets also work with Rotor chainrings. NOT compatible with our Sub Compact chainrings
  • In the box: 4 covers and 4x T30 torx bolts
  • Material: 7075 T6 aluminium
  • Finish : type II anodizing
  • Colour : Black, Grey Ultegra



  • Remove your current bolts and nuts completely
  • Place the bolt covers into their specific positions from the front, so they sit nice and flush with crank
  • Then use provided short bolts with torx T30 sockets and screw them from the back
  • While tightening the provided bolts to the recommended torque, it is necessary to prevent the bolt covers from spinning, by holding them down with your fingers
  • If the covers are not held while torqueing the bolts, they might get damaged
  • You should use about 5-7Nm of force. You MUST use medium strength thread locker on the bolt threads. (for eg. Loctite 243)

Technical details

Part number12511
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