Vortex 312ZR-50 520-Pitch 50-Tooth Steel Rear Sprocket

The Vortex 312ZR-50 is a 50-tooth, 520-pitch steel rear sprocket built for riders who demand durability and consistent power delivery. Engineered by Vortex Racing — a U.S.-based manufacturer with a proven track record in road racing, motocross, and supercross — this sprocket is laser-cut from hardened carbon steel and finished with an electroplated satin coating for corrosion resistance.

Key Features:

• 520 Pitch: Compatible with standard 520-series drive chains
• 50 Teeth: Rear sprocket tooth count optimized for acceleration-focused gearing
• Hardened Carbon Steel Construction: Laser-cut and case-hardened for extended wear life compared to aluminum alternatives
• Electroplated Satin Finish: Provides corrosion resistance for long-term durability
• Weight-Reduction Cutouts: Precision-machined lightening holes reduce rotating mass without sacrificing strength
• Hardened Teeth: Maintain shape under load for consistent chain engagement and efficient power transfer

The Vortex 312ZR-50 is an ideal upgrade for street and track riders seeking a long-lasting, low-maintenance steel rear sprocket that outperforms OEM components. Vortex components are tested on the track with feedback from professional race teams worldwide.