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🔗 Shift Smarter, Ride Stronger — The Chain That Keeps You Ahead
The KMC X12 12 Speed Chain is a high-performance, corrosion-resistant bicycle chain designed for all 12-speed derailleur systems (excluding SRAM Eagle Transmission T-Type). Featuring a non-directional design for easy installation, BlackTech coating for enhanced durability, and Double X-Bridge technology for smooth, precise shifting, this alloy steel chain supports a tensile strength of 12,000 lbf. Ideal for fitness and off-road cycling, it includes a 12-speed Missing Link for quick maintenance and comes with a 2-year manufacturer warranty.










| ASIN | B07V1Y7VCX |
| Best Sellers Rank | 11,116 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 26 in Cycling Chains |
| Brand | KMC |
| Customer Reviews | 4.4 out of 5 stars 1,721 Reviews |
| Global Trade Identification Number | 04715575882758 |
| Included Components | 12 Speed Chain & Joining Link |
| Item Length | 126 Inches |
| Item Type Name | Chain |
| Item Weight | 234 Grams |
| Item pitch | 0.5 inches |
| Load Capacity | 1.2E+3 Pounds |
| Load capacity | 1.2E+3 Pounds |
| Manufacturer | KMC |
| Manufacturer Part Number | BX12BB126 |
| Material | Alloy Steel |
| Model Number | BX12BB126 |
| Pitch | 0.5 inches |
| Product Warranty | 2 Year Manufacture |
| Recommended Uses For Product | Fitness |
| Recommended uses for product | Fitness |
| Roller Diameter | 0.5 Inches |
| Roller diameter | 0.5 Inches |
| Specification Met | High strength, corrosion resistance (BlackTech coating), tensile strength of 12,000 lbf (53.4 kN) |
| Strand Type | Single |
| Unit Count | 1.0 count |
S**E
Top choice for good 12spd chain
Great alternative to shimano and sram chains and a good price
R**Y
KMC QUALITY
Quality Chain. KMC are longer lasting chains in my opinion. Have them on all my bikes. Great value for money. This one also looks good
C**.
KMC
Great 12 speed chain replacement and colour
E**N
Looks great... for about one ride
Chain is going well so far and shifts nicely with no issues. I thought the black and silver would look really smart on the bike and stand out a bit, but if I’m honest after one proper ride it just looks like any other chain once it’s picked up a bit of dirt. Performance wise no complaints at all, but if you’re buying it mainly for looks, you might be just as well saving a few quid and getting the standard one.
W**Y
buy again
buy again
P**N
Beautiful Gold, then brutally strong long lasting chain.
As an Ultra, long distance mtb rider and bikepacker I've learned how important it is to have equipment you can rely on. It's important to have a strong drive train and I have learned to rely on these chains. Even when badly worn after covering 2,000 brutal wet muddy then dry dusty miles these chains just seem to carry on where I've had leading brands just fall apart and snap. It may be pretty but it's strong and reliable 💪 Thanks for a great product 👍
B**S
Chain snapped
Always been impressed with the quality of KMC chains but Chain snapped first ride with it fitted on the chain not the quick link which was ok See the couple of photos attached
P**N
Longevity
Excellent chain.
J**H
Perfect
It was time to replace my chain and i've used KMC in the past. Time to use one again. Works great. Installed on 2023 Niner Jet 9 RDO with SRAM drivetrain. Cleaned off the factory grease which doesn't work well in dry climates and instead used Dumonde.
M**C
Une chaîne au top
Cette chaîne est de très bonne qualité. J'ai eu du 10v, 11v et 12v de cette marque. Toujours impeccable. Elle est compatible avec du sram eagle 12v sans problèmes !
H**9
Not an original KMC X12
I strongly suspect that these are Chinese copies, after 300km the chain is already practically at .75% wear
H**E
Funcional
Ya tuve la oportunidad de probarla y todo excelente ha funcionado
A**.
Va bene
Provata su un cambio SRAM 1x12 G01. Cambiata la catena originale senza cambiare pacco pignoni. Le prime uscite un dramma perchè saltava di continuo su alcuni rapporti. Dopo le prime uscite, la catena si è adattata e non salta più. Purtroppo un difetto a mio avviso del cambio 1x12, che ti costringe a cambiare spesso catena e pignoni. La catena è ottima
Trustpilot
2 weeks ago
2 weeks ago