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The KMC X12 12-speed chain features X-bridge technology for precise shifting and smooth propulsion. Pre-treated with KMC GO CHAIN WAX, it offers superior durability, reduced dirt build-up, and easy maintenance for all 12x drivetrains.
The KMC X12 12-speed chain features X-bridge technology for precise shifting and smooth propulsion. Pre-treated with KMC GO CHAIN WAX, it offers superior durability, reduced dirt build-up, and easy maintenance for all 12x drivetrains.
Kmc

Kmc X12 Aurora Waxed 126L

£50.00 £55.00 9% off
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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!

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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
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Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Kmc X12 Aurora Waxed 126L

Season:All Year Round

Brand:Kmc

Code:K140XW2

The KMC X12 chain features X-bridge technology, designed to provide perfect shifting and dynamic propulsion. Developed with the specific characteristics of Shimano, SRAM, and Campagnolo systems in mind, this 12-speed chain utilises precisely chamfered plates to ensure smooth performance in all riding situations. It is a choice trusted by many top athletes in professional cycling.

Treated with the innovative KMC GO CHAIN WAX, this chain offers enhanced durability and efficiency. Unlike oil-based lubricants, the wax forms a protective barrier that is less susceptible to dirt build-up, which helps to increase drivetrain life and reduce the frequency of cleaning. Please note that due to the colouring process, the final appearance may vary from the images shown.

KMC GO Wax Benefits:

  • Long-lasting: Once applied, the wax dries to form a protective barrier that outlasts oil-based products.
  • Less dirt: The waxed finish attracts less dirt, minimising common causes of wear and ensuring smooth operation.
  • Biodegradable: The formula is free from PFAS and harsh solvents.
  • Easy to use: Simple to apply, with no need to dewax the chain before rewaxing.

Care and Rewaxing:

To maintain performance, KMC recommends specific care intervals. For road bikes, care for the chain at the latest after 250 km or at least once a month. For MTB, cross, and frequent riders in all weather conditions, maintenance is recommended after 100 km at the latest.

When rewaxing, ensure the chain is dry before application. Shake the bottle and apply the wax to the inside of the chain in one complete turn. Do not wipe off excess wax, and allow it to dry completely before riding, especially in wet conditions.

Full Specification:

  • Size: 1/2" x 11/128"
  • Pin Length: 5.2 mm
  • Links: 126
  • Treatment: Waxed with KMC GO
  • Technology: Double X-Bridge
  • Directional: Non-directional
  • Included: Missing links
  • Compatibility: All 12x drivetrains (except SRAM Eagle Transmission T-Type, 12-speed road/gravel)
  • Weight: 262 grams per 110L
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