JT. Steel Standard 1120 - 420 Gearbox output pinionRef : JTC00280A / 1077202002

Manufacturer Ref: JTF1120.11 — JT SPROCKETS standard steel sprocket 1120 - 420. Designed for replacement or gearing changes, this 11-tooth sprocket fits transmissions equipped with a 420 chain pitch. Its targeted manufacturing and machining make it suitable for urban and roadster use where transmission precision matters.

• Material: steel (high-strength SMC420 alloy)
• Number of teeth: 11 (sprocket)
• Chain pitch: 420
• Type / version: 1120 — standard version
• CNC machining for precise geometry and better alignment retention
• Lightweight and optimized design to minimize rotating mass

Choosing a JT Sprockets sprocket made of SMC420 steel ensures a combination of mechanical strength and fine machining: regular tooth profiles, easy installation, and controlled wear when paired with a suitable chain and sprocket. Ideal for adjusting gearing and handling characteristics without altering the original architecture.

Common compatibilities: RIEJU MRT 50 SM (2025), FANTIC XM 50 PERFORMANCE (2025), BETA RR 50 MOTARD (2025). Suitable for riders looking for a robust and precise transmission part for daily urban use or on roadsters.