Vortex 317ZK-51 Rear Sprocket 520 Pitch 51 Tooth Black Aluminum

The Vortex 317ZK-51 is a high-performance aluminum rear sprocket designed for serious motorcycle racers and enthusiasts. This lightweight racing sprocket features 51 teeth with a 520 chain pitch, engineered to reduce rotating mass and deliver maximum power to the pavement.

Key Features:

• 51-tooth configuration with 520 chain pitch
• Black hardcoat aluminum construction for durability and corrosion resistance
• 100% CNC machined in the USA from 7075-T6 billet aluminum
• Patented saber tooth groove design for extended sprocket life
• PTFE black hardcoat finish bonds to aluminum, creating a harder surface with reduced friction
• Lightening holes reduce rotating mass for improved acceleration
• Precision manufactured to the tightest tolerances for perfect concentricity

Vortex Racing has been manufacturing premium motorcycle racing components since 1995, with products tested and proven by professional race teams worldwide in Motocross, Supercross, Road Racing, and Flat Track competition. Each sprocket is crafted from specially formulated aluminum alloy to Vortex specifications, ensuring exceptional strength-to-weight ratio and race-proven performance.