Vortex 611ZR-42 Black 42-Tooth Aluminum Rear Sprocket

The Vortex 611ZR-42 is a 42-tooth aluminum rear sprocket engineered for performance motorcycle applications. Built to Vortex Racing's exacting standards, this sprocket delivers the precision, durability, and weight savings that street and track riders demand.

Key Features:

• Lightweight CAT5 aluminum construction reduces rotating mass for improved throttle response and acceleration
• 100% CNC manufactured in the U.S.A. to precise tolerances for a perfect, concentric fit
• Specially formulated alloy per Vortex specifications for optimal strength-to-weight ratio
• Black anodized finish resists corrosion and provides a clean, aggressive look
• Vortex patented tooth design unlike any other sprocket — saber tooth grooves extend sprocket longevity
• 42 teeth for tuned gear ratio performance

Vortex rear sprockets are a popular upgrade for riders looking to fine-tune their gearing for improved acceleration or to replace worn OEM components with a higher-quality alternative. The 611ZR-42 is designed as a direct bolt-on replacement for compatible applications using the 611-series bolt pattern.