ENDURO BEARINGS Derailleur pulleys - directline xd-15 - shimano grx - 11 speed - graphite

Upgrade your bike's shifting performance with these high-quality machined Delrin derailleur pulleys, designed specifically for 11-speed Shimano GRX derailleurs. Featuring XD-15 Ceramic-Hybrid radial bearings for enhanced durability and smoothness, these pulleys are built to last against corrosion and wear. The 500 AF Delrin material offers high tensile strength, rigidity, natural lubricity, and excellent resistance to moisture, chemicals, and UV rays, ensuring long-lasting performance and ultra-smooth operation. The precision-machined Delrin reduces friction significantly compared to aluminum or titanium pulleys, thanks to its Teflon-infused properties. The deep-groove raceways accommodate larger Grade 5 Silicon Nitride ceramic balls for improved contact and longevity. Designed with a 5mm bolt hole and optimized for most 11-speed Shimano GRX derailleurs, these pulleys are available in various configurations, including Ceramic-Hybrid and Zero Ceramic options. Proudly manufactured in the USA, they guarantee superior shifting and durability for serious cyclists.