## Rear Sprocket 520 37 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 steel (High Carbon Steel), it ensures long life and resistance to wear, even under demanding operating conditions. ### Precision and Performance The sprocket has 37 teeth, which, combined with the 520 chain size, ensures smooth and efficient power transfer. The precise manufacturing of the teeth minimizes energy loss and ensures quiet operation. ### Fit and Installation A center hole diameter of 125mm, a bolt circle diameter of 145mm, and a bolt hole diameter of 10.5mm facilitate installation and guarantee a perfect fit for many motorcycle and scooter models. Compatibility with the 520 chain is crucial for the proper functioning of the drive system. ### JT Sprockets Quality JT Sprockets is a renowned sprocket manufacturer known for the high quality of its products. The JTR1857 sprocket is a guarantee of reliability and durability, confirmed by the brand's years of experience in the motorcycle industry. ### Summary By choosing the JT Sprockets JTR1857 rear sprocket, you are investing in proven quality and performance. Solid construction, precise workmanship, and compatibility with the 520 chain are features that both professionals and motorcycle enthusiasts will appreciate.