Vortex 615BZR-51 Steel Rear Sprocket Pitch Sprockets - 51T 520 Black

The Vortex 615BZR-51 is a 51-tooth steel rear sprocket designed as a direct OEM-style replacement or performance upgrade for motorcycles using a 520 pitch chain. Manufactured by Vortex Racing, this sprocket is precision-cut from high-quality steel for excellent durability and long service life under demanding riding conditions.

Key Features:

• 51 Tooth count for optimized acceleration and torque delivery
• 520 chain pitch compatibility
• Steel construction for superior strength and longevity compared to aluminum alternatives
• Black finish for a clean, aggressive appearance and corrosion resistance
• Precision CNC-machined for accurate tooth profile and consistent chain engagement
• Direct bolt-on fitment — no modifications required

The Vortex 615BZR series sprockets are a trusted choice among street and track riders who demand precise power delivery and lasting performance. The steel construction makes this sprocket ideal for high-mileage street use, while the accurate tooth geometry ensures smooth, quiet chain operation throughout the sprocket's service life.