Derailleur Pulleys for Campagnolo 11 speed - Full Ceramic WHEEL BEARINGS the Speed Kolossos optimizes airflow

the Speed Kolossos optimizes airflow while maintaining the crisp

Looking for the easiest way to up the performance of your bike

check out the customizer link below

while cross bearings are better suited for rugged terrain found in mountain biking and cyclocross

cross bearings if you frequently ride on wet roads or gravel

Derailleur Pulleys for Campagnolo 11 speed - Full Ceramic WHEEL BEARINGS the Speed Kolossos optimizes airflowThese pulleys will just not stop spinning! Don't take our word for it, just listen to our friend and badass racer Allison Linnell, doing a full spindown on video right here. The name of these pulleys came from the fact that Instagram videos were limited to 15 seconds. There is no way to show how well they spin in 15 seconds. Since then Instagram has lifted the long video ban and Kogel is looking to rename this amazing product. Send us your