Vortex 615ZK-45 Aluminum Rear Sprocket 45-Tooth Black 520 Pitch

The Vortex 615ZK-45 is a 45-tooth, 520-pitch aluminum rear sprocket finished in black anodizing, engineered for performance-minded motorcycle riders seeking a lightweight alternative to heavy OEM steel sprockets.

Key Features:

• 7075 T6 Aerospace-Grade Aluminum Construction: CNC machined from high-strength aluminum alloy to precise tolerances for a perfectly concentric fit and smooth power delivery
• Black Anodized Finish: Corrosion-resistant black anodized coating provides lasting protection and an aggressive appearance
• Reduced Rotating Mass: Significantly lighter than stock steel sprockets, lowering rotational inertia for improved throttle response and acceleration
• Vortex Patented Tooth Design: Unique tooth profile maximizes sprocket longevity and promotes smooth chain engagement and disengagement
• 520 Pitch Compatibility: Designed for use with standard 520-pitch chains
• 45 Teeth: Ideal for riders tuning final drive gearing for enhanced low-end torque and quicker acceleration
• 100% CNC Manufactured in the USA: Built to Vortex's exacting quality standards with no compromises

Vortex rear sprockets are a trusted choice among racers and performance street riders alike. The 615ZK-45 offers a direct bolt-on upgrade that can meaningfully sharpen acceleration feel without sacrificing durability. Always replace the chain and front sprocket simultaneously when installing a new rear sprocket for optimal drivetrain longevity.