XD-15 11T Shimano

• Precision machined Black Delrin Derailleur pulleys featuring Zero, Black-Oxide treated, Ceramic-Hybrid Radial Bearings for enhanced shifting performance and longevity. • Designed and manufactured for performance, these pulleys feature CN (tight clearance) bearings in the upper pulley to maximize shifting accuracy and C4 (loose clearance) bearings in the lower pulley to allow for chain-line movement. • When compared to other pulley materials, 500 AF Delrin¬? with Teflon¬?, offers significantly less drag than pulleys machined from aluminum or titanium. • The eleven tooth size and profile with 5mm bolt-holes are designed as an upgrade for most 11 speed Shimano derailleurs.