Vortex 312ZR-33 Aluminum Rear Sprocket 520 Pitch 33-Tooth Silver

The Vortex 312ZR-33 is a lightweight aluminum rear sprocket featuring a 520 pitch and 33 teeth with a silver anodized finish. Engineered for motorcycle road racing, track days, and high-performance street riding, this sprocket is part of Vortex Racing's trusted 312ZR series lineup.

Vortex Racing manufactures their aluminum sprockets from 7075-T6 billet aluminum — the same aerospace-grade alloy used by professional race teams worldwide. Each sprocket is 100% CNC-machined in the USA to exceptionally tight tolerances, ensuring precise concentricity and consistent power delivery.

Key Features:

• 520 pitch rear sprocket with 33 teeth
• Constructed from 7075-T6 billet aluminum for an optimal strength-to-weight ratio
• Silver anodized finish for corrosion resistance and lasting good looks
• Vortex patented tooth profile design for increased sprocket longevity
• Saber tooth grooves help clear debris and reduce wear
• Significantly lighter than OEM steel sprockets, reducing rotating mass
• CNC-machined in the USA to precise tolerances
• Drilled lightening pockets on applicable designs to further reduce weight

Upgrading to the Vortex 312ZR-33 reduces rotational mass at the rear wheel, contributing to improved acceleration, deceleration response, and more agile handling. This sprocket is a direct OEM-style replacement or a performance gearing upgrade for compatible motorcycles running a 520-pitch chain.