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Kogel KOLOSSOS derailleur arm with pulleys for Shimano ULTEGRA/DURA ACE, black

699 €
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For all those looking for maximum performance!

Oversized derailleur pulleys were not the last step to achieve maximum performance. Kolossos Aero protects your pulleys and chain from the wind and thus reduces aerodynamic drag. The Aero Kolossos frame is made from CNC machined aluminum with an internal skeleton, Kogel ceramic bearings and road seals, resulting in less friction and more efficient power transfer.

Main advantages:
  • Reduction of aerodynamic resistance
  • Reduction of friction, while maintaining shifting accuracy
  • Kolossos is 3x stiffer than competing products and 2x stiffer compared to the original pulley cage on your derailleur
  • Long tooth profile on the lower pulley for better chain holding
  • Ceramic bearings in the rollers for even lower friction
  • Choice of two color variants
The leash is intended for road derailleurs:
  • R8000 11-speed Ultegra range, both Di2 and manual
  • R9100 11-speed Dura Ace range, both Di2 and manual
  • R8100 12-speed Ultegra Di2 series
  • R9200 12-speed Dura Ace Di2 series
  • Number of teeth on the pulleys: 12 (upper) and 19 (lower)
 
Product details
Groupset Shimano Dura-Ace, Shimano Ultegra
product ID 258457
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Accessories for bicycle derailleurs from Kogel
The Texas brand Kogel will be loved by everyone who is focused even to the last details. It offers ceramic bottom brackets, oversize pulleys or full arms and also ceramic wheel bearings. They make bolts from titanium for mounting discs, baskets or stems, all tested by the pro Trek teams they sponsor.
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