The Avian 4-Bolt BMX Chainring in Blue with 50 teeth is a high-quality and durable chainring designed for BMX bikes. Known for its reliability and performance, Avian is a trusted brand in the cycling community. This specific model, 315029, offers a vibrant blue color and a sturdy construction that will withstand heavy usage on the track or in the skate park. Upgrade your bike with this chainring for smooth and efficient gear changes during your next ride.