SKU: 67869369471

Aero Oversized Derailleur Cage - Shimano Dura Ace R9200 & Ultegra R8100

Sale price$9630.00 Regular price$10700.00
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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Description

Aero Oversized Derailleur Cage - Shimano Dura Ace R9200 & Ultegra R8100Big pulley wheels were not the final step to free speed. Kolossos now comes in Aero, shielding your wheels and chain from the wind for those riders looking for maximum output. Aero Kolossos is built with Kogel ceramic bearings and road seals. Fully built in CNC machined aluminum with an internal spine for maximum stiffness, Aero Kolossos will help you cut through the wind as well as help you maintain shifting accuracy. When it comes to marginal gains,

Big pulley wheels were not the final step to free speed. Kolossos now comes in Aero, shielding your wheels and chain from the wind for those riders looking for maximum output. Aero Kolossos is built with Kogel ceramic bearings and road seals.

Fully built in CNC machined aluminum with an internal spine for maximum stiffness, Aero Kolossos will help you cut through the wind as well as help you maintain shifting accuracy. When it comes to marginal gains, there is just no point in gaining a few watts, only to give away your benefits every time you change gears or hit rough tarmac.

While the obvious use is for triathlons and time trials, we did not want to restrict the range of use for these cages. The Aero Kolossos is equally at home in road and crit racing, where the terrain can be bumpy and shifting happens often and aggressively.

**

Aero Kolossos for Shimano has a 12-tooth upper and 19-tooth lower wheel. It fits 11 and 12 speed Ultegra and Dura Ace derailleurs.

  • R8000 11-speed Ultegra series, both Di2 and Mechanical
  • R9100 11-speed Dura Ace series, both Di2 and Mechanical
  • R8100 11-speed Ultegra Di2 Series
  • R9200 11-speed Dura Ace Di2 Series

We do not stock the cages for Shimano 105 11 speed (R7000 series) and 12 speed (R7100 series) derailleurs, but we can build it for you. Please reach out via the chat window on your screen or [email protected]

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67869369471

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4.5 ★★★★★
Based on 15 reviews
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Verified Purchase
Miguel Longoria
Belleville, US
★★★★★ 5
Very good. Good deal!!!
Color: Tan, Size: Passenger side
Excellent!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
G
Verified Purchase
Gavin
Waukegan, US
★★★★★ 1
Avoid this handle if you use it
Color: Black, Size: Driver side
Good Product if you don't use it, terrible product if you do use it. The plastic it's made of is too flimsy and gets worse with heat. Installed this product and it only lasted a month and a half before the metal reinforcement plate ripped off the entire plastic handle assembly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 4, 2025
O
Verified Purchase
Online Customer
Lake Worth, US
★★★★★ 5
Perfect match
Color: Tan, Size: Driver side
Fit our truck perfectly, color matches, and it looks like new again.
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Reviewed in the United States on January 31, 2026
W
Verified Purchase
William LiCalzi
Los Angeles, US
★★★★★ 4
Fitment is decent
Color: Tan, Size: Passenger side
Overall a nice replacement color matched but the fitment was a little loose even though tightened well, where the end comes toward the top of the pillar it is loose and doesn't fit flush
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Reviewed in the United States on December 1, 2023
D
Verified Purchase
dan w
Natrona Heights, US
★★★★★ 5
thank you
Color: Tan, Size: Driver side
installed today fits like a glove
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 22, 2025

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