The X0 chain slots into the middle of SRAM's Eagle Transmission chain hierarchy — one step below the flagship XX SL and XX chains, one step above GX. It uses the same Flattop architecture as every other T-Type chain, meaning it only works with SRAM's Transmission drivetrain and won't run on previous-generation Eagle systems or SRAM's road Flattop chains. If you're building or replacing on an X0 T-Type groupset, this is the chain that matches.

What distinguishes the X0 chain from the GX below it is the finish. Electroless nickel plating goes down first, then a PVD coating on top for corrosion and wear resistance, and the whole chain wears the Dark Polar color specific to the X0 tier. The plating package is genuinely functional on a Transmission drivetrain — T-Type shifts under full pedaling load, which means the chain is being asked to move laterally across the cassette while transmitting torque, and the surface treatment slows down the wear that comes with that.

Solid pin construction makes this chain E-MTB approved, which matters if you're running Transmission on a mid-drive e-bike where torque spikes are higher and chain replacements come sooner. The chain ships at 126 links with a Powerlock connector included, which covers most full-suspension Transmission builds without needing an additional master link on the bench.... Read More