Vortex 609ZR-51 Aluminum Rear Sprocket 520 Pitch 51-Tooth Silver

The Vortex 609ZR-51 is a 51-tooth, 520-pitch aluminum rear sprocket finished in a natural silver anodized coat. Engineered for performance street and track applications, this sprocket is 100% CNC-machined in the USA from a specially formulated aluminum alloy that delivers an ideal balance of lightweight durability and long-term wear resistance.

Key Features:

• 520 Chain Pitch — compatible with 520-series drive chains
• 51 Teeth — provides increased low-end torque and acceleration over stock gearing
• Lightweight Aluminum Construction — reduces rotating mass for improved throttle response
• Silver (ZR) Anodized Finish — corrosion-resistant finish for lasting appearance
• Precision Lightening Holes — strategically placed to shed additional weight without compromising strength
• Unique Tooth Profile — Vortex's proprietary tooth design promotes smooth chain engagement and extended sprocket life
• 100% CNC Manufactured in the USA — machined to tight tolerances for precise fit and concentricity

Vortex Racing has been manufacturing top-quality motorcycle racing components since 1995, supplying professional race teams worldwide across Motocross, Supercross, Road Racing, and Flat Track disciplines. The 609ZR-51 rear sprocket is a direct bolt-on upgrade designed to replace a worn OEM sprocket or to fine-tune your motorcycle's final drive ratio for improved performance.