These chainrings are a game changer for single-ring drivetrains! These Race Face Single rings now feature performance-enhancing chain retention technology, allowing them (for most riders) to be used without a chainguide! The secret are alternating fat/skinny teeth to fit more closely into the narrow and wide plate spacing of a normal chain, "grabbing" the chain and holding it more securely... even without the use of a clutched derailleur!
These particular chainrings are made for SRAM cranksets that use a removable spider, such as the X0 and X1. By nature of the Direct Mount design, Race Face was able to offer smallers chainrings such as the 26T, 28T and 30T options. Geekery aside, this allows you to get a low enough climbing gear for pedaling an All-Mountain bike up the trail, without having to worry about BCD.
The Narrow/Wide Single Rings are strong enough to stand up to the abuse of the downhill trail, yet light enough for cross country racers. Single Rings are machined from 7075 aluminum and tested in the most punishing terrain. They’re built to last!