To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
KMC X12 EPT 126L 12-Speed Chain – Anti-Rust, High-Performance Bicycle Chain for MTB & Road
KMC X12 EPT 126L 12-Speed Chain – Anti-Rust, High-Performance Bicycle Chain for MTB & Road
KMC

KMC X12 EPT 126L Bicycle Chain - Silver

£44.99
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

KMC X12 EPT 126L Bicycle Chain - Silver

Brand:KMC

Code:K140E

Upgrade your ride with the KMC X12 EPT 12-Speed Chain, engineered for exceptional durability, ultra-smooth performance, and superior rust protection. Designed with EcoProTeQ anti-rust technology, this 126-link chain offers twice the corrosion resistance of standard coatings, reducing wear and delivering quiet, efficient drivetrain performance in any weather condition.

Featuring Double X-Durability and a non-directional design, the KMC X12 is easy to install and built to withstand the rigors of aggressive trail riding or high-mileage road use. This chain is compatible with 12-speed drivetrains from Shimano, SRAM (MTB only), and Campagnolo, making it the perfect upgrade for modern mountain bikes and select road bikes.

  • EPT EcoProTeQ Anti-Rust Coating – Provides 2x the rust resistance of standard RB treatments
  • Double X-Durability – Extended chain life for high-performance riding
  • Smooth, Quiet Operation – Low-friction surface reduces noise and enhances gear shifting
  • Non-Directional Design – Simple installation with no directional requirement
  • Universal MTB Compatibility – Works with 12-speed Shimano, SRAM MTB, and Campagnolo systems
  • 126 Links with MissingLink – Includes quick-connect link for easy chain installation

Compatibility Notes:

  • Compatible with: Shimano 12-speed MTB, SRAM 12-speed MTB, Campagnolo 12-speed
  • Not compatible with SRAM 12-speed road groupsets due to differing pin lengths

Ideal For:

  • Mountain bikers seeking a rust-resistant, high-durability chain
  • Cyclists riding in wet, muddy, or high-humidity environments
  • Riders upgrading or replacing worn 12-speed MTB drivetrain components

KMC’s X12 EPT 126L Chain is the go-to choice for cyclists demanding performance, longevity, and unbeatable corrosion protection on every ride.

Technical Information
  • 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
Sizing Information
Professional Opinion
Home Mountain Biking Components KMC Gears & Drivetrain