My review is here. Although the new Red 2x launched as a 12-speed drivetrain, SRAM is debuting its first 13-speed drivetrain with XPLR. The new cassette employs familiar SRAM design and technologies.

The refreshed model comes with the same frame design we heaped praise on the last time we tested it, but with a parts hop-up, including a full SRAM GX 12-speed drivetrain. It tops the T-140 range, ...