JT. Steel Standard 548 - 428 Gearbox output pinionRef : JTC00406A / 1077429001

The JT Sprockets JTF548.13 sprocket is a transmission part designed for riders seeking simplicity and durability. Made from high-strength steel, this standard 548 sprocket with 13 teeth is intended for transmissions equipped with a 428 pitch chain. Careful design and machining ensure precise fitting and reliable interaction with the chain and the rear sprocket.

• Brand: JT Sprockets
• Reference: JTF548.13
• Material: Steel (high-strength alloy)
• Number of teeth: 13
• Chain pitch: 428
• Type: 548 — standard version

Ideal for restoration or changing gear ratios, this sprocket is suitable for a wide range of urban machines, roadsters, and lightweight off-road models. It specifically fits the following 125/80 cc models for reference: YAMAHA TT‑R 125 LW Big Wheels, RIEJU Tango 125i Scrambler, and BETA Evo 80 2T Senior (check compatibility based on year and original setup).

Compact and robust, this JT sprocket easily fits into a drivetrain subjected to daily stresses: starts, accelerations, and varied terrain riding. For replacement, check the wear of the chain and rear sprocket to ensure optimal lifespan of the entire transmission system.