Vortex 151ZK-41 Black 41-Tooth 520 Aluminum Rear Sprocket

The Vortex 151ZK-41 is a 41-tooth, 520-pitch CAT5 aluminum rear sprocket finished in black anodize. Engineered for street and sport motorcycle applications, it delivers a precision-fit, lightweight alternative to OEM steel sprockets without sacrificing durability or power transfer.

Key Features:

• CAT5 Aluminum Construction: Lightweight, specially formulated alloy built to Vortex specifications for an optimal strength-to-weight ratio
• Black Anodized Finish: Electrically coated for corrosion resistance and a clean, aggressive appearance
• 100% CNC Machined: Manufactured in the U.S.A. to precise tolerances for consistent concentricity and quiet operation
• Vortex Patented Tooth Design: Saber tooth grooves and unique tooth geometry extend sprocket life and improve chain engagement
• Weight Reduction: Lighter rotating mass compared to steel sprockets contributes to improved throttle response
• 41 Teeth / 520 Pitch: Stock-equivalent tooth count for balanced acceleration and top-end performance

The Vortex 151ZK-41 is a direct-fit rear sprocket designed to replace worn OEM components or serve as an upgrade for riders seeking reduced unsprung weight. Vortex sprockets are precision-manufactured and induction-hardened to precise tolerances, producing a sprocket that is concentric, stronger, and quieter than competing brands.