JT Sprockets Twinstar rear sprocket for 520 chain combines low weight with long service life thanks to its dual-material construction. Computer-designed strength and premium materials help deliver reliable power transfer and consistent wear.
Get durable drive performance without unnecessary weight. The JT Sprockets Twinstar Rear Sprocket is engineered to deliver maximum strength at minimum weight by combining top-grade materials with precision manufacturing. It’s an excellent choice when you want consistent power transfer, predictable wear, and a sprocket that holds up under hard use.
Thanks to its dual-material design, this sprocket helps solve a common problem for off-road and performance riders: choosing between lightweight aluminum (fast wear) and heavy all-steel options. The Twinstar construction gives you the best of both worlds—reduced rotating mass with a hard-wearing outer ring—so you can ride longer between replacements and keep your drivetrain feeling crisp.
