This (XL) frame has modular rear dropouts so that is can be run in any combination of geared or single speed, disc or v-brakes. The True Temper OX Platinum steel tubing provides a nice ride quality at a reasonable weight. This is a relatively unknown gem of a frame in the 29'er world! If you are in the market for a versatile 29'er and want something lighter and more refined than the entry-level bikes, you should consider putting the Ionic Steelhead 29r on your short-list.