JT Sprockets Rear OE Steel T39 #520 JTR823.39

Restore your bike's acceleration and drive efficiency with this premium 39-tooth rear sprocket. Its rugged steel construction makes it suitable for a wide range of riding conditions, from city streets to open highways.

• Superior C49 high-carbon steel provides the toughness required for high-mileage use.
• Fits standard #520 pitch chains for broad compatibility and easy maintenance.
• Advanced heat treatment increases surface hardness for improved tooth longevity.
• Engineered to reduce friction, helping to extend the life of your entire chain kit.