KMC

X-12 12-Speed Chain - Bulk Box of 25

KMC X-12 12-Speed Chain - Bulk Box of 25 gives shops and serious mechanics a high-performance solution for modern 12-speed drivetrains. Perfect for stocking the workbench or outfitting multiple builds, this bulk box delivers consistent, precision-engineered chains that keep shifting crisp and reliable ride after ride.

Each KMC X-12 chain features refined chamfer angles and outer plate shaping to reduce friction and noise while maintaining stability under extreme chainlines. The Double X-Bridge design ensures fast, clean gear changes across the cassette—whether it’s a quick sprint or a long grind up steep terrain. Built to perform seamlessly with Shimano, SRAM, and Campagnolo 12-speed systems (excluding SRAM eTap and Flattop), it’s a shop essential for smooth, consistent drivetrain performance.

• Bulk box of 25 chains—ideal for shop use or fleet maintenance
• Optimized chamfer angles for stability and quiet operation on wide chainlines
• Double X-Bridge design delivers fast, precise shifting under load
• Compatible with Shimano, SRAM, and Campagnolo 12-speed drivetrains (excluding eTap and Flattop)
• Durable construction stands up to high torque and demanding conditions

For professional mechanics or high-volume riders, the KMC X-12 12-Speed Chain Bulk Box keeps every drivetrain running smooth, efficient, and ready for whatever the ride throws down.