Kogel Kolossos Oversized Pulley Cage Shimano 105 Black

Kolossos is the Greek word for a statue, much larger than the original subject
Seems fitting for an oversized derailleur cage. 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. Besides reduced friction, this cage is built with shifting accuracy, gravel worthiness, and chain retention in mind.

Compatibility

• This cage works on both Shimano R7100 & R7000 SS (Short) and GS (Medium) cages with the following limitations for cassette sizes
• Shimano short SS cage max cassette size 30T
• Shimano mid GS cage max cassette 34T
  Please note** Installing this oversized derailleur cage typically requires replacing your chain to accommodate the larger pulleys.