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: Shimano XT and XTR 12-speed MTB derailleurs. Does not fit derailleurs other than 12-speed. Pulleys: 14 teeth (upper) and 19 teeth (lower).
