Vortex 525AZR-43 525-Pitch Aluminum Rear Sprocket 43T

The Vortex 525AZR-43 is a 525-pitch aluminum rear sprocket with 43 teeth, engineered for high-performance street and racing motorcycle applications. Manufactured by Vortex Racing — a brand built and operated by motorcycle racers — this sprocket delivers a precision-fit, lightweight alternative to OEM steel sprockets without sacrificing durability.

Key Features:

• 525 pitch compatibility — matches standard 525-series drive chains
• 43-tooth rear sprocket for fine-tuned gear ratio adjustments
• Lightweight aluminum construction reduces unsprung and rotational mass for improved throttle response
• Precision CNC-machined to tight tolerances for consistent chain engagement and extended wear life
• Anodized finish provides corrosion resistance and a clean, race-ready appearance
• Hard-anodized tooth surfaces increase durability despite aluminum construction
• Direct OEM-style replacement — no modifications required for compatible applications
• Made in the USA by Vortex Racing

Vortex Racing sprockets are trusted by professional race teams and enthusiasts worldwide. The 525AZR-43 is an ideal upgrade for riders looking to optimize acceleration, top speed, or simply replace a worn OEM sprocket with a higher-quality component.