The X12 brings KMC’s biggest breakthrough in rust-protection to 12x groupsets. EcoProteQ treatment doubles the rust resistance compared to the RB treatment. This smoother coating also means less noise from the chain, greater performance, maximum rust resistance and a great look.

Double X Durability, unmatched chain life KMC guarantees your satisfaction! EcoProTeQ Anti-Rust technology, NON-Directional Design: assembly of this chain is independent of direction!

• 1/2″x11/128″ 126 Links
• Pin Length: 5.65 mm
• Colour: Silver
• Hi-Performance
• Triple X-Durability
• Anti Rust/e-Bike
• Non Directional
• EcoProTeQ coated
• Compatible with all 12x drivetrains