JT Rear Sprocket Steel 45 Tooth for 520 Chain - Part Number JTR857.45

The JT Rear Sprocket JTR857.45 is designed for high-performance motorcycle applications, offering durability and precision. Crafted exclusively from top-grade Japanese 545C high carbon steel, this sprocket ensures long-lasting wear resistance. The heat-treated and hand-finished construction guarantees that it meets or exceeds OEM standards, providing reliable performance under demanding riding conditions. Its superior material and manufacturing process allow it to outperform mild steel or surface-hardened sprockets by two to three times in longevity, making it a cost-effective choice for serious riders. The sprocket features 48 teeth on the rear and 21 teeth on the front, aligning perfectly with OEM gearing specifications for optimal power transfer and smooth operation. It is designed to fit chains with a 530 pitch, ensuring compatibility with a wide range of motorcycle models. Installing the JT JTR857.45 sprocket enhances drivetrain durability and performance, making it ideal for both casual riding and competitive use. Whether upgrading your existing setup or replacing worn components, this sprocket provides a reliable and durable solution that extends the lifespan of your motorcycle’s drive system.

Features:

• Made from Japanese 545C high carbon steel for superior durability

• Heat treated and hand finished to meet or exceed OEM standards

• Outlasts mild steel or surface-hardened sprockets by two to three times

• Designed with 48 teeth on the rear and 21 teeth on the front for OEM gearing compatibility

• Fits all sprockets with a 530 chain pitch for wide application