JT. Steel Standard 1579 - 520 Gearbox output pinionRef : JTC00320A / 1077285002

JT SPROCKETS Standard Steel Sprocket 1579 - 520 (Manufacturer part number: JTF1579.16)

JT SPROCKETS output sprocket designed for replacement or gearing modification on 520 transmissions. Made of steel, standard version 1579, this 16-tooth sprocket fits roadster and sport motorcycles that use the 520 chain pitch. Ideal for riders looking for a reliable replacement part that meets manufacturer specifications.

• Material: steel (high-strength SMC420 alloy)
• Number of teeth: 16
• Chain pitch: 520
• Type / reference: 1579 — standard version
• CNC machining for precise tooth profile and snug fit

This sprocket is used for wear replacement or to adjust gearing (acceleration vs top speed). Its lightweight design and careful machining contribute to a clean chain engagement, minimizing jolts and uneven wear when mounted with a compatible sprocket and chain.

Common compatibilities: YAMAHA R9 (2025 - 900 cc), YAMAHA YZF-R1 M (2024 - 1000 cc), YAMAHA YZF-R1 (2024 - 1000 cc). Always check the chain pitch and manufacturer reference before installation.