Vortex 414ZK-39 Aluminum Rear Sprocket 39 Tooth 520 Pitch Black

The Vortex 414ZK-39 is a 39-tooth, 520-pitch aluminum rear sprocket finished in a satin black anodized coating. Engineered for motorcycle riders who demand precision drivetrain components, this sprocket is 100% CNC-machined in the USA from a specially formulated aluminum alloy developed to Vortex's own specifications.

Key Features:

• 39-Tooth, 520 Pitch — Direct-fit rear sprocket for 520-chain applications
• Black Anodized Finish — Electro-plated satin black finish provides corrosion resistance and a clean, stealthy appearance
• CNC-Machined Aluminum — 100% manufactured in the USA from Vortex's proprietary aluminum alloy for a superior strength-to-weight ratio
• Lightweight Design — Reduced rotating mass compared to steel sprockets, improving throttle response and power delivery
• Vortex Patented Tooth Profile — Unique tooth geometry engineered to increase sprocket longevity and promote smooth chain engagement
• Direct OEM Replacement — Designed to match original mounting dimensions for straightforward installation

Vortex Racing rear aluminum sprockets are a proven choice for street riders and track enthusiasts alike. The lightweight construction reduces rotational mass and helps put more power to the pavement, making the 414ZK-39 an excellent upgrade over stock steel sprockets.