Vortex 313ZK-52 CAT5 Aluminum Rear Sprocket 520 Pitch 52-Tooth Black

The Vortex 313ZK-52 is a 52-tooth, 520-pitch CAT5 aluminum rear sprocket finished in an eye-catching black anodize with contrasting silver machined accents. Engineered for performance-oriented street and track riders, this sprocket delivers a measurable reduction in rotating mass compared to heavier steel alternatives, translating to improved throttle response and drivetrain efficiency.

Key Features:

• Lightweight CAT5 aluminum construction — reduces rotating mass for quicker acceleration and improved power delivery
• 100% CNC manufactured in the USA — machined to precise tolerances for a perfectly concentric fit
• Specially formulated alloy per Vortex specifications — optimized for strength-to-weight performance
• Black anodized finish with silver machined accents (ZK series) — corrosion-resistant and visually distinctive
• Vortex patented tooth design — unique geometry reduces chain wear and extends sprocket service life
• 520 pitch — compatible with standard 520 chain applications
• 52 teeth — higher tooth count tuned for increased low-end torque and acceleration

Vortex sprockets are trusted by professional racing teams and performance riders worldwide. The 313ZK-52 is a direct bolt-on upgrade that pairs with any quality 520-pitch chain, making it an ideal choice for those seeking a performance gearing change with premium aesthetics.