## Rear Sprocket 520 39 Teeth JT Sprockets JTR857 The JT Sprockets JTR857 rear sprocket is a high-quality component for your motorcycle. Made of durable C49 steel (High Carbon Steel), it guarantees long life and reliability even in the toughest conditions. The sprocket has 39 teeth and is designed for a 520 size chain. ### Precision and Durability JT Sprockets is a renowned manufacturer of motorcycle parts, known for its attention to detail and precision manufacturing. The JTR857 sprocket is a perfect example of this philosophy. The C49 steel, from which it is made, is characterized by high resistance to wear and tear and mechanical damage, ensuring smooth and trouble-free operation of the drive system. ### Fit and Specifications The JTR857 sprocket is designed for precise fit and easy installation. The diameter of the mounting bolt holes is 10.5mm, the central hole diameter is 125mm, and the bolt circle diameter is 145mm. These precise dimensions guarantee compatibility with many motorcycle models. ### Key Benefits: * **Durability and Longevity:** C49 steel provides resistance to wear and damage. * **Precision Manufacturing:** Guarantees smooth and quiet operation of the drive system. * **Easy Installation:** Precise dimensions facilitate installation. * **JT Sprockets Brand:** Synonymous with quality and reliability in the world of motorcycle parts. By choosing the JT Sprockets JTR857 rear sprocket, you are investing in quality and safety. It is the ideal solution for motorcyclists who value reliability and precision.