What Size Chainring Are You Running on Your Mountain Bike?

Most new mountain bikes are shipping with a one-by drivetrain. Depending on the style of bike, and the range on the cassette, stock builds may see anywhere from a 30 to a 36 tooth ring up front. Yet depending on your riding and style and terrain, the stock ring size might not work for you. Fortunately it’s usually an easy and inexpensive swap.