JT. Steel Standard 1129 - 420 Gearbox output pinionRef : JTC00287A / 1077208002

JT SPROCKETS standard steel sprocket 1129 - 420 (Manufacturer reference: JTF1129.13)

13-tooth sprocket designed by JT Sprockets for transmissions equipped with a 420 pitch chain. Made from high-strength steel, this sprocket from the 1129 series combines precision machining and robustness for a reliable replacement or gearing modification on your trail, supermoto, or small motocross bike.

• Material: steel (high-strength SMC420 alloy)
• Number of teeth: 13
• Chain pitch: 420
• Type/version: 1129 – standard
• CNC machining for a precise tooth profile and uniform wear

Ideal for urban setups as well as off-road outings, this sprocket is aimed at riders looking for a simple and solid transmission solution. Changing the sprocket allows you to adjust the gearing to favor acceleration or top speed according to your needs without compromising mechanical integrity.

Among the commonly compatible models: Husqvarna TC 50 Mini (2024), Derbi Senda X-Treme 50 SM (2022), and Kawasaki KLX 110 (2020). Check the type 1129 and the 420 pitch before ordering to ensure compatibility with your motorcycle.