Upgrade your final drive with the JT Sprockets JTA251.51BLK rear sprocket, engineered for maximum strength at minimum weight. Made from premium 7075-T6 aluminum with heat-treatment and bead-blasted finishing for reliable wear and smooth performance.
Maximum strength, minimal weight—built for serious riding. The JT Sprockets JTA251.51BLK rear sprocket is computer-designed to deliver excellent strength-to-weight performance, helping your bike accelerate cleanly while keeping rotating mass low. Manufactured from high-grade 7075-T6 aluminum and finished in black, it’s a smart upgrade or replacement for riders who want consistent power transfer and dependable durability.
If your current rear sprocket is hooked, worn, or causing rough drivetrain feel, replacing it can restore smoother chain engagement and help protect your chain and front sprocket from premature wear. JT’s heat-treated and bead-blasted process helps reduce surface tension and supports long service life under demanding conditions.
