Vortex 312ZR-31 Aluminum Rear Sprocket 31-Tooth Silver

The Vortex 312ZR-31 is a 31-tooth aluminum rear sprocket finished in silver anodize, designed for performance street and racing applications. Manufactured in the USA to Vortex's exacting standards, this lightweight sprocket is a direct upgrade over heavy OEM steel units.

Key Features:

• 100% CNC machined from a specially formulated aluminum alloy per Vortex specifications
• Silver anodized finish for corrosion resistance and long-lasting appearance
• Vortex patented tooth design engineered to extend sprocket longevity
• Lightweight construction reduces rotating mass for improved acceleration and throttle response
• 31 teeth — ideal for fine-tuning final drive ratio
• Precision manufacturing ensures concentricity for smooth, quiet power transfer

Vortex aluminum rear sprockets are a popular choice among track-day riders and racers looking to reduce unsprung weight and optimize gear ratios. The 312ZR series is available in a range of tooth counts, allowing riders to dial in their preferred balance of acceleration and top-end speed.