ENDURO BEARINGS Derailleur pulleys - xd-15 - sram eagle - 12 speed - black

Upgrade your cycling performance with these high-quality machined Delrin derailleur pulleys, designed specifically for 12-speed SRAM Eagle derailleurs. Featuring XD15 ceramic-hybrid radial bearings for enhanced shifting precision and durability, these pulleys guarantee long-lasting performance against corrosion. The upper pulley incorporates CN (tight clearance) bearings for maximum shifting accuracy, while the lower pulley uses C4 (loose clearance) bearings to accommodate chain-line movement. Made from 500 AF Delrin, a material known for high tensile strength, rigidity, natural lubricity, and resistance to moisture, chemicals, and UV rays, ensuring durability and smooth operation. The Teflon-infused Delrin reduces friction significantly compared to aluminum or titanium pulleys, resulting in less drag. Our exclusive XD15 ceramic-hybrid bearings combine corrosion-resistant, cryogenically treated nitrogen steel races with Silicon Nitride Grade 3 ceramic balls, delivering superior performance and longevity. The deep-groove raceways accommodate larger ceramic balls for increased contact area and efficiency. The set includes a 12-tooth upper pulley and a 14-tooth lower pulley with 5mm bolt holes, compatible with SRAM 12-speed cable-actuated Eagle derailleurs, and includes an XD15 cable idler pulley. Proudly manufactured in the USA, Enduro Derailleur Pulleys are available in various configurations and performance levels to meet your cycling needs.