JT. Steel Standard 1263 - 428 Gearbox output pinionRef : JTC01089A / 1077215005

The JT Sprockets JTF1263.16 sprocket is a steel engine sprocket designed for replacements and gear ratio changes on small displacement motorcycles. CNC machined from SMC420 steel alloy, it combines machining precision and mechanical strength to integrate into your machine's primary transmission. Its standard design adheres to the 428 chain pitch and the original tooth profile for a reliable coupling with the sprocket and chain.

• Material: steel (SMC420 alloy)
• Number of teeth: 16 teeth
• Chain pitch: 428
• Type / Reference: 1263 – standard version
• Machining: CNC for dimensional precision

Designed for urban, cross, and roadster use, this sprocket is particularly suited for small 125 cc motorcycles. It is ideal for riders looking to replace a worn part or slightly modify the gear ratio to adjust torque and extension. Its geometry and material are selected to minimize premature wear when mounted and adjusted according to manufacturer recommendations.

Manufacturer reference: JTF1263.16

Examples of compatible motorcycles: YAMAHA R125 (2025), RIEJU RS3 125 (2016), BETA RE 125 4T MOTARD (2012).