KMC X12 Waxed 12-Speed Chain

The KMC X Series chains are developed on decades of drivetrain R&D expertise, integrating advanced engineering and manufacturing innovations. Designed specifically for Shimano and Campagnolo 12-Speed drivetrain systems, the X-Bridge structure features optimised chamfering and a widened inner bridge to ensure precise, stable shifting across a wide range of gear combinations and chainline conditions. This design enhances overall drivetrain compatibility while improving shifting efficiency and reliability.

Combined with KMC’s GO innovative wax-based formula and a specialised wax treatment process, the chain delivers low-friction performance straight out of the box. This treatment significantly improves pedaling efficiency while doubling durability compared to conventional lubrication methods. Unlike oil-lubricated chains, wax-treated chains resist dirt and debris adhesion, reducing abrasive wear, simplifying maintenance, and extending the service life of both the chain and the entire drivetrain-ultimately lowering long-term maintenance costs.

Thanks to the innovative formula of KMC GO chain wax, the premium KMC chains treated with this wax offer unrivaled durability and efficiency. Compared to oil-based lubricants, waxed chains are less susceptible to dirt build-up, increasing drivetrain life and reducing cleaning intervals.

The KMC X-Series was developed with the specific characteristics of the Shimano, SRAM and Campagnolo systems in mind. Thanks to precisely chamfered plates, the X-Bridge technology enables perfect shifting and smooth propulsion in all riding situations. The X Series enjoys the trust of many top athletes in professional cycling.

Technology

KMC GO Wax Benefits

Experience the next level of chain performance with KMC's new, advanced dry wax formula. Designed to significantly reduce friction, enhance shifting and providing optimum efficiency, KMC GO Wax extends the life of your drivetrain by creating a durable microfilm on your chain that repels water and resists stickiness.

For a cleaner, faster, and longer-lasting performance.

• Durability: Once applied, the wax dries to form a protective barrier that outlasts oil-based products
• Cleaner Performance: KMC's waxed chains attract less dirt, minimising the common causes of wear and ensuring smoother operation
• Maintenance Made Simple: With minimal dirt accumulation, your drivetrain requires less frequent care. Refreshing the wax is straightforward-simply use a dry brush or cloth. No degreasing is necessary; a simple touch-up with KMC GO Wax keeps your chain in top condition
• Eco Friendly: KMC GO Wax is biodegradable and free from PFAS and harsh solvents, making it a responsible choice for both your bike and the environment

Silver Nickel-Plated Coating

Nickel is an alloying metal primarily used for refining steel. With corrosion resistance, enhanced hardness, and proves highly effective as rust protection.

Gold Ti-N Coating

Titanium nitride is a chemical compound of titanium and nitrogen. Offering extreme hardness and corrosion resistance. This special coating has an ultra-smooth surface, and is extremely durable against the elements.

Features

• Highest Pin Power: Unsurpassed riveting geometry
• Double X Durability: Double SP exceptional Durability
• Double "X" Bridge Shape: Precise gear shifting
• Outer Plate Chamfering: Accurate shifting
• Inner Plate Chamfering: Expeditious shifting
• 126 Links
• Waxed with KMC GO
• Non-directional chain
• Missing links included
• Compatible with all 12-Speed drivetrains (Except SRAM Eagle Transmission T-Type, 12-Speed road / gravel)

Specification

• Chain Size: 1/2" x 11/128"
• Pin Length: 5.2mm
• Weight: 110L: 262 grams

Recommended Care Intervals

• Road Bikes: KMC recommend to care for your KMC Waxed at the latest after 250km or at least once a month
• MTB, cross and frequent riders in all weather conditions: After 100km at the latest

Rewaxing

• The chain must be dry before applying the wax
• The chain does not need to be dewaxed
• Shake the bottle and apply to the inside of the chain (One complete turn)
• Do not wipe off excess wax
• Allow to dry completely before riding, especially in wet conditions