Vortex 436ZK-40 CAT5 Aluminum Rear Drive Sprocket 530 Pitch 40 Tooth Black

The Vortex 436ZK-40 is a 530-pitch, 40-tooth CAT5 aluminum rear drive sprocket finished in black anodize with contrasting silver machine cuts. Engineered for street and track performance, it delivers a meaningful reduction in rotating mass compared to standard steel sprockets, helping put more power to the pavement.

Key Features:

• CAT5 Aluminum Construction — Lightweight, specially formulated alloy developed to Vortex's proprietary specifications for an optimal strength-to-weight ratio
• 100% CNC Manufactured in the USA — Precision machined to tight tolerances for consistent fitment and reliable performance
• Vortex Patented Tooth Profile — Proprietary saber-tooth groove geometry extends sprocket service life and improves chain engagement
• Black Anodized Finish — Durable black anodize with contrasting silver-machined accents; available in four colors (in select sizes)
• 530 Chain Pitch — Compatible with standard 530-pitch drive chains
• 40 Teeth — Rear sprocket position

Vortex rear sprockets are a proven choice among racers and performance street riders seeking a direct OEM-replacement upgrade that sheds weight without sacrificing durability. The patented tooth design is exclusive to Vortex and unlike any other sprocket on the market.