SRAM PC XX1 Eagle 12-Speed Chain With PowerLock (Black)

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It might look normal from the outside, but the engineering inside this incredible new chain design that makes possible a gear range previously found only in 2-chainring drivetrains. And it’s also the biggest contributor to the Eagle™ drivetrain’s ultra-smooth, precise, durable and quiet performance. The Eagle™ chain’s links have a smooth radius, with no sharp edges or chamfers, which yield a significant reduction in noise, friction and wear on chainrings and cassette cogs. This design also allows for a flatter plate, which means more consistent chain riveting and greater overall strength. HARD CHROME™ technology extends the chain’s optimal performance life, and a Titanium Nitride coating on the Gold and Black models decreases corrosion and further reduces friction.


  • Groundbreaking new chain design and technology
  • The Eagle™ chain has been completely re-engineered, and is produced with new manufacturing technology
  • All-new Eagle™ PowerLock® chain connector with FLOWLINK™ technology provides better chain-guiding and increased longevity
  • The XX1 Eagle™ chain is the quietest, strongest and most wear-resistant chain in the world
  • Unique features and design also provide significantly improved wear resistance on Eagle™ cassettes and rings

Flow Link:
Ultra-smooth chain inner-plates are completely devoid of square edges, resulting in a chain that engages the cassette and chainring with far less friction, for quieter performance and better wear life. The design allows a narrower overall profile that can withstand greater angles, and also allows for a flatter outer-plate, which means more consistent chain riveting and enhanced overall strength.


The SRAM HARD CHROME™ chain has four times the elongation (wear) resistance to our other chains. This is due to the new finishing process on the inner links and rollers. Push pin strength and ultimate strength are equivalent to our current chains. The HARD CHROME™ chain lasts longer and is just as strong.

SRAM chain engineers developed PowerLock® as a tool free, sure, and consistent way to connect our chains. While PowerLock® does not require special tools for install, the especially tight tolerances of 10-, 11- and 12-speed drivetrains mandate that each PowerLock® is good for a one-time application only.

SRAM X-SYNC™ 1x chain rings provide the highest level of performance and durability. The SRAM X-SYNC™ tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC™ chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC™ rings are an integral part of the SRAM 1x™ drivetrain.

Technology Highlight(s):
Compatible Gears: Eagle™ 10-50t cassette only
Closing Link: Eagle™ PowerLock® PVD
Outer Plate: Nickel + PVD Gold or Black
Inner Plate: Chrome Plated + PVD Gold or Black
Pin Treatment: Chrome hardened, Hollow Pin™
Recommended Group: XX1 Eagle™, X01 Eagle™
Speeds: 12
Chain length: 126 links
Color: Black  
Compatibility: Eagle

This product was added to our catalog on October 18, 2016.