## Rear Sprocket 520 40 Teeth JT Sprockets JTR1857 The JT Sprockets JTR1857 rear sprocket is a high-quality component for motorcycles and scooters, guaranteeing optimal power transmission. Made of durable C49 - High carbon steel, it ensures long life and resistance to wear, even under demanding operating conditions. ### Parameters and Advantages: * **Number of teeth: 40:** Influences the drive ratio, and thus the acceleration and top speed. 40 teeth is a popular choice, offering balanced performance. * **Chain size 520:** Compatible with 520 size chains, ensuring smooth and efficient power transfer. The precise manufacturing of the sprocket ensures a perfect fit to the chain, minimizing energy loss and noise. * **Center hole diameter 125mm:** Ensures precise fit to the wheel hub. * **Bolt circle diameter 145mm:** Facilitates mounting and dismounting of the sprocket. * **Bolt hole diameter 10.5mm:** Compatible with standard mounting bolts. * **Material C49 - High carbon steel:** Guarantees high strength and wear resistance, extending the sprocket's lifespan. ### JT Sprockets Brand JT Sprockets is a renowned manufacturer of motorcycle and scooter sprockets, known for the high quality of its products. JT Sprockets are valued by professionals and amateurs for their precision, durability, and reliability. By choosing the JT Sprockets JTR1857 sprocket, you are investing in a proven product that will provide you with trouble-free operation for a long time.