KOLOSSAL PERFORMANCE

Ready to experience total drivetrain optimization? Introducing Kolossos, Kogel Bearing's ceramic oversized derailleur cage for Shimano's DURA-ACE RD-R9250 and ULTEGRA RD-R8150 12-speed Di2 rear derailleurs.

Kolossos is the Greek word for a statue, much larger than the original subject. Seems fitting for an oversized derailleur cage. Besides being designed for World Tour victories, Kolossos gives you reduced friction, improved shifting accuracy, and better chain retention.

Imagine the performance of replacing your stock pulleys with a ceramic 12-tooth top pulley and a 19-tooth bottom pulley built on the stiffest cage on the market.

Please note: Installing an oversized derailleur cage typically requires replacing your chain to accommodate the larger pulleys.

BIGGER IS BETTER

Oversized derailleur pulleys are all the rage nowadays. Big derailleur pulleys cause less deflection in the chain and slower rotations in the bearings. Both lead to less friction and a more efficient power transfer between legs and wheels.

Kogel's goal was to build a cage so stiff that it holds the chain like a stock cage, while offering all the benefits of low drag oversized pulleys. Kolossos is 3x stiffer than the main competitor product and 2x stiffer compared to the original pulley cage on your derailleur.

Many oversized pulley systems are plagued with vague shifting due to the lack of stiffness of the components. Plus, your stock derailleur's efficiency is limited by the size of the factory derailleur pulleys.

Kogel Oversized Derailleur Cages are:

FEATURES:

• Built to offer low friction while maintaining shifting accuracy.
• Built for road as well as off-road use, we are not here to restrict your adventures
• Engineered with a long-tooth profile on lower pulley for better chain retention.
  • Design offering low friction AND shifting accuracy.
  • Long-tooth profile on lower pulley for better chain retention.
  • Chain catcher on lower pulley to prevent chain jams.
  • No limits on-road and off-road compatibility.
  • SS (short) cage and GS (medium) cage fit and easy installation right out of the box.
  • Reduced drag associated with clutch derailleurs and 1x setups
  • 2-year Guaranteed Performance Warranty on the cages, so you can feel confident and secure about your next two seasons of riding