11T 13T Bicycle Derailleur Pulley Steel Bearing Jockey Wheel MTB Road
11T 13T Bicycle Derailleur Pulley Steel Bearing Jockey Wheel MTB Road
Designed for smooth shifting, low friction, and long-lasting performance. Compatible with 4mm, 5mm, and 6mm rear derailleur systems. 11T about 11.4g, 13T about 13.7g. 11T about 11.4g. Being the fastest spinning bearings on your bike, an upgrade with our high-performance pulley wheels are an effective way to save energy or ride faster.