Vortex 316ZL-51 CAT5 Rear Sprocket 520 Pitch 51-Tooth Lime Green

The Vortex 316ZL-51 is a CAT5 Series aluminum rear sprocket featuring a 520 chain pitch and 51 teeth, finished in Vortex's signature Lime Green anodized color. Engineered for serious riders who demand precision, durability, and a weight advantage over stock steel sprockets.

Key Features:

• 520 Chain Pitch – Compatible with 520-series drive chains
• 51-Tooth Rear Sprocket – Tuned for increased low-end torque and acceleration
• Lightweight Aluminum Construction – CNC-machined from high-grade aluminum for reduced rotating mass
• Anodized Lime Green Finish – Hard anodized for corrosion resistance and lasting color
• Lightening Holes – Strategically placed to further reduce unsprung weight
• 100% CNC Manufactured in the USA – Tight tolerances ensure proper chain engagement and concentricity
• Race-Proven Design – Tested by professional race teams across Motocross, Supercross, and Road Racing

Vortex Racing rear aluminum sprockets are a popular upgrade for riders looking to reduce rotating mass and improve throttle response. The 51-tooth configuration provides a more aggressive gear ratio compared to stock, improving acceleration and low-end power delivery. This sprocket is a direct-fit replacement designed to install without modification using factory mounting hardware.