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KMC X12 BlackTech 12-Speed Bicycle Chain – Premium Performance Chain for Road, MTB & Gravel
KMC X12 BlackTech 12-Speed Bicycle Chain – Premium Performance Chain for Road, MTB & Gravel
KMC

KMC X12 BlackTech 12-Speed 126L Bicycle Chain - Black

£24.99 £39.99 38% off
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 BlackTech 12-Speed 126L Bicycle Chain - Black

Brand:KMC

Code:K140KT

The KMC X12 BlackTech 12-Speed Chain is engineered for precision, strength, and durability, built to deliver flawless performance across Shimano, SRAM, and Campagnolo 12-speed drivetrains. Trusted by elite cyclists and professionals worldwide, this high-performance chain ensures smooth, reliable shifting and long-lasting wear resistance in all riding conditions.


Exceptional Shifting with X-Bridge Technology

KMC’s X-Bridge Technology uses precisely chamfered inner and outer plates for crisp, fast, and quiet gear changes. Whether you’re powering up climbs, sprinting on the flats, or tackling technical trails, the X12 chain guarantees smooth, consistent power transfer and optimal drivetrain efficiency.


Durable BlackTech Surface Treatment

The advanced KMC BlackTech coating isn’t just painted on, it’s a two-step surface treatment that permanently bonds deep into the material. The result is a rich black finish that stays black, resists rust, and stands up to the harshest riding environments. This premium finish offers exceptional corrosion resistance and long-lasting aesthetics for road, gravel, and mountain bikes alike.


Lightweight, Strong, and Universal

Weighing just 268g (126 links), the KMC X12 BlackTech chain delivers maximum performance with minimal weight. The Double X Durability design extends the chain’s lifespan, while its non-directional construction makes installation quick and easy. Compatible with all 12-speed drivetrains (except SRAM Eagle Transmission T-Type and 12-speed road/gravel), this chain offers true versatility across your bikes.


For riders who demand precision, durability, and premium aesthetics, the KMC X12 BlackTech Chain delivers unbeatable performance. From road racers to mountain adventurers, it’s the ideal upgrade for smoother shifting, longer life, and a bold black look that lasts ride after ride.

Technical Information
  • Compatibility: Works with Shimano, SRAM, and Campagnolo 12-speed drivetrains (excluding SRAM Eagle Transmission T-Type & 12-speed road/gravel)
  • Technology: KMC X-Bridge for precise and efficient shifting performance
  • Finish: BlackTech treatment for long-lasting rust resistance and a deep black finish
  • Durability: Double X Durability for extended chain life and reduced wear
  • Design: Non-directional for easy installation
  • Length: 126 links
  • Weight: 268g
  • Includes: Non-reusable 12x MissingLink connector
Sizing Information
Professional Opinion
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