The C1 Chainring for Powermeter from PowerTap is a full featured, crank-based power meter that features dual-sided measurement. Manufactured by FSA, the one-piece chainring design provides added stiffness for shifting no matter the terrain. Available in 53/39, 52/36 or 50/36 chainring tooth options for 5 bolt, 110 BCD cranks, the C1 mounts to existing hardware on the bike. It uses dual band ANT+ and Bluetooth SMART connectivity making the C1 an obvious choice for riders looking for more features and better value. Available in Black only.