Delivery in 4-5 business days (Europe)
Bigger is faster. Large derailleur pulleys cause less chain deflection and slower rotation of the ceramic bearings. Both lead to less friction and more efficient power transfer.
Main advantages
- Reduced friction while maintaining shifting accuracy
- Kolossos is 3x stiffer than competing products and 2x stiffer than the original pulley cage on your derailleur
- Long tooth profile on the lower pulley for better chain grip
- Ceramic bearings in the pulleys for even lower friction
- Choice of three colour options
Compatibility: SRAM XX1 Eagle, X01 Eagle and GX Eagle MTB derailleurs, including the ASX version. Does not fit non-Eagle (11-speed) derailleurs. Maximum cassette size 52t. Pulleys: 14 teeth (upper) and 19 teeth (lower).
