Vortex 312ZK-51 Aluminum Rear Sprocket 415 Pitch 51-Tooth

The Vortex 312ZK-51 is a high-performance aluminum rear sprocket featuring 51 teeth on a 415 pitch chain pattern. Engineered as a lightweight upgrade over heavy stock steel sprockets, it delivers improved throttle response and power delivery thanks to reduced rotational mass.

Constructed from 7075 T6 billet aluminum, this sprocket offers an exceptional strength-to-weight ratio purpose-built for demanding off-road and motocross applications. Every sprocket is 100% CNC-machined to exacting tolerances, ensuring precise alignment and minimizing drivetrain wear. Vortex's patented unique tooth geometry reduces friction for smoother chain engagement and extended sprocket life.

Available in a range of anodized colors, the 312ZK-51 adds a custom look while the anodized finish provides corrosion resistance for long-lasting durability.

Key Features:

• 51-tooth rear sprocket, 415 pitch chain compatibility
• Lightweight 7075 T6 billet aluminum construction
• 100% CNC-machined in the USA for precision fit
• Vortex patented tooth design for increased longevity and reduced friction
• Available in multiple anodized colors for a custom appearance
• Anodized finish resists corrosion
• Reduces rotating mass for improved throttle response and acceleration

The Vortex 312ZK-51 is a direct-fit performance replacement sprocket designed for riders who demand race-quality components for their machine.