



The JT SPROCKETS JTR1135.69 sprocket is a robust transmission part designed for roadsters and small displacement bikes equipped with a 428 transmission. Made from C49 steel, it offers a solid construction and a sleek black finish that easily integrates with the motorcycle's final drive.
Whether you are replacing a worn sprocket or looking to modify the gearing, this standard JT sprocket allows you to adjust the character of the motorcycle (torque responsiveness, engine RPM) according to your needs. Its steel design makes it suitable for everyday use and on the road, while facilitating maintenance and chain replacement. Simple installation in place of the original part: follow the recommended torque specifications and check compatibility with your pinion and 428 chain.
Common compatibilities: APRILIA RX 125 (2025), APRILIA SX 125 (2024), APRILIA 125 SX E4 (2020). To maintain an efficient transmission, regularly check for tooth wear and the condition of the chain.