Vortex 312ZK-40 Aluminum Rear Sprocket 415 Pitch 40 Tooth Black

The Vortex 312ZK-40 is a high-performance aluminum rear sprocket featuring a 415 chain pitch and 40 teeth, finished in a durable black anodized coating. Engineered by Vortex Racing in the USA, this sprocket is a premium upgrade over stock steel units for off-road, motocross, and minibike applications.

Key Features:

• Material: 7075 T6 billet aluminum — maximizes strength while minimizing rotational mass
• CNC Machined: 100% CNC manufactured with saber tooth grooves for precise fit and consistent alignment
• Chain Pitch: 415
• Tooth Count: 40 teeth
• Finish: Black anodized — provides corrosion resistance and a clean, aggressive appearance
• Lightening Holes: Strategically placed cutouts reduce rotating mass for improved throttle response
• Vortex Patented Tooth Design: Reduces friction and drag for smoother chain transitions and extended chain life
• Made in the USA to the tightest manufacturing tolerances

Vortex Racing rear sprockets are trusted by professional race teams worldwide across Motocross, Supercross, Road Racing, and Minibike competition. The 312ZK-40 delivers optimized gearing performance and lasting durability in a lightweight package.