Vortex 635ZR-40 Steel Rear Sprocket 40T

The Vortex 635ZR-40 is a 40-tooth steel rear sprocket from Vortex Racing, a trusted name in performance drivetrain components for street and track motorcycles. Engineered for durability and precise chain engagement, this sprocket is designed as a direct OEM-style replacement or performance upgrade.

Key Features:

• 40 teeth — maintains stock gearing ratio or serves as a direct replacement
• Constructed from high-strength steel for long service life and resistance to wear
• Precision-machined for accurate chain engagement and smooth power delivery
• Lightening cuts reduce rotating mass without compromising structural integrity
• Compatible with standard 520 or 530 chain pitch (verify with fitment guide)
• Direct bolt-on installation — no modification required

Vortex sprockets are manufactured to exacting tolerances and are a popular choice among riders who demand reliability and consistent performance on the street or circuit. The ZR series steel construction makes this sprocket an excellent value for high-mileage street riders and track day enthusiasts alike.