XX1 Sram completely turned the drivetrain market for mountain bikes upside down. Using only one chainring on the crank was nothing new two years ago, but you couldn't do without a chain guide. The solution to the problem is Sram's X-SYNC Chain ring, which holds the chain in place with a special milling. In theory, this sounds a bit strange at first, but in practice the principle works surprisingly reliably.
Since Sram has patented this functional principle, until recently it was only possible to use Sram products in combination with the XX1 use. A license has now been granted to the Canadian company Chromag and to the Accell Group. Thus, both manufacturers will produce their own version of the chainring, but will continue to use the remaining components of the XX1.
//Accell Group
Accell Group is increasingly focusing on the high-end of the bicycle market. Accell has leading positions in the Netherlands, Belgium, Germany, Italy, France, Finland, Turkey, the United Kingdom and the United States. The Accell Group's best-known brands are Batavus, Sparta, Loekie, Geist, Haibike, Hercules, Winora, Raleigh, Diamondback, Lapierre, Tunturi, Atala, Redline and XLC.
//Chromag
Chromag manufactures high quality bicycle components and is headquartered in Whistler, Canada. In addition to a full line of quality components, Chromag also manufacture an extensive line of steel hardtails.