JT Sprockets Twinstar hybrid rear sprocket combines long-lasting steel wear performance with a lightweight 7075-T6 Ergal aluminum core for fast acceleration and efficient power transfer. Built with precision laser cutting and CNC machining for race-ready fit and strength.
Maximum durability where it matters, lightweight performance where you want it. The JT Sprockets Twinstar Steel/Aluminum Hybrid Rear Sprocket is designed to deliver strong, consistent power transfer while significantly improving wear life compared to typical aluminum sprockets. By combining a hardened high-carbon steel outer ring with an aviation-grade 7075-T6 Ergal aluminum core, you get a sprocket that stays sharp and reliable ride after ride without adding unnecessary rotating weight.
This hybrid construction helps solve a common off-road problem: fast-wearing rear sprockets that quickly lose their tooth profile and reduce drivetrain efficiency. The hardened steel ring resists hooking and wear, while the aluminum center keeps the setup lighter for responsive handling and acceleration—ideal for motocross and enduro use.
