With the advancements in single chain rings and rear derailleurs one by (1x) systems have become more reliable. The Solo Narrow Wide chain ring will keep your chain in place no matter how rough the trail gets. Available 96mm BCD to suit most cranks on the market. Also available in a number of colors and a number of different tooth sizes. The Solo Narrow Wide ring is another quality FUNN component that you will never have to worry about.