scheduleOur stores and their opening hours
Localisation
Cycling Running Hiking and camping Mountaineering Ski mountaineering and skiing Lifestyle Nutrition and fitness
Categories
Bikes
E-bikes
Components
Tyres and tubes
Wheels and rims
Cycling shoes
Apparel
Backpacks and bags
Electronics and lights
Accessories
Helmets and glasses
Indoor training
Bike maintenance
Cosmetics and hygiene
All product categories
Quick links
Deal of the week
New products
Sale
MTBIKER products
Why shop with us?
Shimano
SRAM
FORCE
Schwalbe
Maxxis
Continental
Kellys
Park Tool
BBB
Elite
Weldtite
MTBIKER
Thule
Garmin
Leatt
ASSOS
RockShox
Castelli
Categories
Running apparel
Running shoes
Running backpacks, vests and hip packs
Glasses
Headlamps and accessories
Microspikes
Running shoe covers
Running poles
Bottles, vacuum flasks and hydration packs
Sport watches and sport testers
Running earbuds
Canicross harnesses
All product categories
Quick links
Deal of the week
New products
Sale
MTBIKER products
Why shop with us?
Craft
Garmin
Oakley
Suunto
Fenix
Julbo
X-BIONIC
Karpos
COMPRESSPORT
uvex
La Sportiva
FORCE
Devold
SILVINI
ORTOVOX
Brynje
inov-8
On Running
Categories
Hiking clothes
Hiking footwear
Hiking backpacks and bags
Baby carriers for hiking
Hiking accessories
Camping equipment
Via ferrata
Hiking and camping accessories
All product categories
Quick links
Deal of the week
New products
Sale
MTBIKER products
Why shop with us?
Craft
Karpos
La Sportiva
Oakley
Garmin
OCÚN
Fenix
Fjällräven
SILVINI
ORTOVOX
Julbo
Suunto
X-BIONIC
Black Diamond
LOWA
Haglöfs
Northfinder
uvex
Categories
Climbing shoes
Harnesses
Mountaineering clothing
Helmets for climbing
Climbing equipment
Climbing backpacks
Chalk and chalk bags
Ropes and slings
Glasses
Ice axes
Crampons
Via ferrata
Work equipment
Bags and covers
Rope bags
Accessories for climbing and skimo
Hangboards
Bouldering mats
All product categories
Quick links
Deal of the week
New products
Sale
MTBIKER products
Why shop with us?
Craft
Karpos
OCÚN
Oakley
Petzl
Fenix
ORTOVOX
Black Diamond
Julbo
La Sportiva
Singing rock
X-BIONIC
Mammut
uvex
SILVINI
Devold
Haglöfs
Northfinder
Categories
Apparel
Skis
Sets
Climbing skins
Ski boots and shoes
Bindings
Poles
Skimo equipment
Skimo backpacks
Avalanche equipment
Helmets
Goggles
Accessories
Bags and covers
All product categories
Quick links
Deal of the week
New products
Sale
MTBIKER products
Why shop with us?
Karpos
Oakley
Craft
Mammut
Julbo
ORTOVOX
X-BIONIC
SILVINI
Fenix
uvex
SCARPA
Devold
Northfinder
CamelBak
Haglöfs
Brynje
POC
FORCE
Categories
Apparel
Footwear
Backpacks and bags
Bottles and vacuum flasks
Eyewear
Sports watches and sport testers
Other accessories
All product categories
Quick links
Deal of the week
New products
Sale
MTBIKER products
Why shop with us?
Garmin
Fjällräven
Suunto
Craft
Sidas
Karpos
Patagonia
CamelBak
On Running
Haglöfs
Black Diamond
MTBIKER
Oakley
uvex
Formthotics
Northfinder
SILVINI
Nikwax
Categories
Protein
Energy
Creatine
Regeneration and amino acids
Vitamins and minerals
Other supplements
Snacks, butters, coffee
Shakers and accessories
Multipack
Dehydrated and ready meals
Apparel
Footwear
Exercise tools
Cosmetics and hygiene
Tapes and pain relief
All product categories
Quick links
Deal of the week
New products
Sale
MTBIKER products
Why shop with us?
SiS
NUTREND
Kompava
Veloskin
PowerBar
ASSOS
Craft
GymBeam
Enervit
AONE Nutrition
Namedsport
Chimpanzee
Muc-Off
MARVA
FORCE
X-BIONIC
MTBIKER
QM Sports care
keyboard_backspaceBack
Cycling navigate_next Components navigate_next Rear derailleurs navigate_next Accessories navigate_next Kogel KOLOSSOS derailleur cage with pulleys for Shimano ULTEGRA/DURA ACE, black
Kogel

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

699 €
Found a better price?
Add to list contact_supportProduct question
In-store pickup
From 06.11.2026 (Friday) Check availability
chevron_forward
delivery_truck_speed
By courier to your home Delivery by courier DPD Delivery by courier GLS
Delivery method on Monday 09.11.2026
location_on
At pick-up points DPD pick-up point GLS / Alzabox pick-up point Packeta pick-up point
Delivery method on Monday 09.11.2026
replay
Extended return option up to 100 days More info
safety_check
Extended additional warranty +1 year More info
delivery_truck_speed
Free shipping
For everyone looking for maximum performance!



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



Main advantages:

  • Reduced aerodynamic drag
  • Reduced 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 retention
  • Ceramic bearings in the pulleys for even lower friction
  • Choice of two color variants
The cage is designed for road derailleurs:
  • R8000 11-speed Ultegra series, both Di2 and mechanical
  • R9100 11-speed Dura Ace series, both Di2 and mechanical
  • R8100 12-speed Ultegra Di2 series
  • R9200 12-speed Dura Ace Di2 series
  • Number of teeth on pulleys: 12 (upper) and 19 (lower)
 
Product details
Groupset Shimano Dura-Ace, Shimano Ultegra
product ID 258457
Product rating  (0 ratings)
0/5
(0 ratings)
(0 ratings)
(0 ratings)
(0 ratings)
(0 ratings)
(0 ratings)
How do you rate the product?
Add a review
Help others, earn points and shop better prices thanks to the loyalty program
Product questions

There are currently no questions

Add product question
Add product question
Kogel
Accessories 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.
Contact information

Average brand rating in the category

5/5 Third most popular brand
Shopping FAQ

All the answers to questions about delivery, payment, security, returns, warranty and much else.

Show info
Similar products
You can try these searches
Accessories for bicycle derailleurs, Kogel
You may find these products complementary
All products from the category
Bike chains
Show all
Bike shifting
Show all
Bicycle multi tools
Show all
Lubricants and oils for bike and chains
Show all
Why shop with us?
Find out what makes us special
1 500 000+ orders

We are the largest cycling e-shop in Slovakia, verified by 100,000+ customers.

Unique customer service

We are available via e-mail, chat, phone, or in person at the MTBIKER store.

We actively support the cycling community in Slovakia

Thanks to your order we can support cycling development.

Secure payment methods

The payment process is safe and we offer a wide range of options.

Loyalty program

We will reward you for your purchase and also for quality contributions in the MTBIKER forum, e-shop, trips and photo gallery.

6 modern stores

Pick up your order, get inspired, browse the selection, or have your bike serviced.

navigate_beforeprevious navigate_nextďalší
keyboard_arrow_up