JT. Steel Standard 1579 - 520 Output sprocketRef : JTC00319A / 1077285001

The JT Sprockets sprocket reference JTF1579.15 is a robust transmission component designed for motorcycles equipped with a 520 pitch chain. Designed for standard replacement or to modify the gearing, this steel sprocket offers a reliable solution for the primary transmission between chain and rear sprocket.

• Material: steel (high-strength SMC420 alloy)
• Number of teeth: 15 teeth
• Chain pitch: 520
• Type / Reference: sprocket 1579, standard version
• CNC machining for precise finish and reliable fit on the shaft
• Lightweight and machined design to limit unsprung mass

Suitable for road and roadster use, this JT Sprockets sprocket installs easily to restore original geometry or test a different gearing. It is particularly compatible with recent models such as Yamaha R9 (2025, 900 cc), Yamaha YZF‑R1 M (2024, 1000 cc), and Yamaha YZF‑R1 (2024, 1000 cc), subject to specific compatibility checks on your machine.

A reliable spare part for transmission maintenance, the JTF1579.15 meets JT Sprockets' industrial standards and is aimed at riders concerned with a clean and durable installation.