The Rear Sprocket Chain Wheel 45T Teeth Gear Disc is an essential component for your Honda YBR250, JYM250, or JYM YBR 250 bike. It fits perfectly with the 428 drive chain and offers a reliable fit for your specific model. With its 45T teeth, this chain wheel ensures smooth and efficient power transfer from the rear sprocket to the rear wheel, enhancing your bike's acceleration, climbing abilities, and overall performance. The durable design ensures long-lasting durability and reliability, making it a wise investment for your bike maintenance routine.