SRAM XPLR OPTIMIZED: Engineered specifically for the SRAM XPLR 12-speed drivetrain. These 12-tooth (12T) jockey wheels ensure crisp, fast, and reliable shifting performance for gravel and adventure riding ADVANCED COMPOSITE MATERIAL: Constructed from a special composite material reinforced with glass fiber. This material is designed for maximum durability and resistance to wear, outlasting standard plastic pulleys LOW FRICTION & QUIET OPERATION: Equipped with high-quality bearings and a specialized tooth profile that reduces friction. Enjoy a smoother, quieter drivetrain even when riding through dust, mud, and grit on the trails SELF-LUBRICATING PROPERTIES: The composite material has self-lubricating qualities to prevent chain drag and ensure consistent performance over long distances and varied weather conditions EASY UPGRADE OR REPLACEMENT: A direct-fit replacement for your original SRAM XPLR pulleys. Perfect for maintaining your gravel bike’s performance or upgrading to a more durable, long-lasting component