JT. Steel Standard 712 - 428 Gearbox output pinionRef : JTC01486A / 1129690001

The JT Sprockets JTF712.13 sprocket is a transmission part designed for 428 setups, intended for replacement during normal wear or for a gear ratio change. Made from steel, this type 712 sprocket features 13 teeth and is compatible with transmissions equipped with a 428 chain. It is ideal for roadsters and small displacement bikes where engagement precision is crucial.

• Manufacturer Reference: JTF712.13
• Material: steel
• Number of Teeth: 13
• Chain Pitch: 428
• Type: 712 (front sprocket)

Before installation, check compatibility with your model and the condition of the chain and the rear sprocket: a new sprocket should be paired with a chain in good condition to ensure smooth operation. Installation and tightening should follow the manufacturer's recommendations to avoid excessive play. It is particularly suitable for the listed APRILIA models (RX 125 2025, TUONO 125 2024, SX 125 2024) as a replacement option.

A simple and essential component of the transmission, this JT Sprockets sprocket is aimed at riders looking to restore the original gear ratio or adjust engine response by changing the number of teeth, while adhering to the specifications of a 428 chain.