JT Sprockets Racelite Aluminum Rear Sprocket Yamaha R1 / LE The JT RaceLite sprocket series is crafted through precision CNC machining from 7075-T6 Ergal, an aviation-grade aluminum alloy known for its strength. Engineered to endure the harsh conditions of pro-racing, this range offers optimal durability while maintaining a lightweight profile, adhering to JT's stringent quality standards. Features: Machined from 7075-T6 Ergal aviation grade aluminum Designed to withstand extreme pro-race conditions Provides maximum strength and durability at minimum weight