The CeramicSpeed SRAM 1-11 Titanium Coated Pulley Wheels have been expertly designed and hand-built in Denmark for quality assurance. The SRAM 1x 11-Speed rear derailleurs are best fitted with CeramicSpeed 12-tooth pulleys. Built to work with less mechanical friction while adding to the power transmitted to the rear wheel. The CeramicSpeed SRAM 1-11 Titanium Coated Pulley Wheels are crafted for superb durability and long lifespan. The SRAM 1-11 Pulley Wheels are compatible with the following 11-speed rear derailleurs:Force CX1Force 1Rival 1XX1 Mountain Bike derailleur X01 Mountain Bike derailleur The upper and lower pulleys both have a narrow-wide tooth design. The machined titanium pulleys paired with CeramicSpeed Balls installed in coated, hardened-steel races promise a superb life span and high-end performance. The CeramicSpeed SRAM 1-11 Titanium Coated Pulley Wheels will elevate your performance to a whole new level. Features: -2 x 12-tooth pulley wheels -CeramicSpeed bearing oil in 15ml dropper bottle -CeramicSpeed grease -Sticker sheet

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