You get the strength of aerospace-grade alloy with the weight savings your machine needs for the track. Precision CNC machined from certified 7075-T6 Ergal aviation-grade aluminum, this sprocket delivers race-proven durability that holds up under extreme pro-race conditions. Features 7075-T6 Ergal aviation-grade aluminum construction provides maximum strength at minimum weight for competitive advantage Precision CNC machining to JT&';s exacting standards ensures accurate tooth profiles and smooth chain engagement State-of-the-art laser cutting and CNC equipment deliver an ultra-lightweight race-proven design Engineered for extreme pro-race conditions so you ride with confidence under hard acceleration and high loads