Vortex 491-42 Silver 42-Tooth Aluminum Rear Sprocket

The Vortex 491-42 is a silver, 42-tooth aluminum rear sprocket engineered for high-performance motorcycle applications. Machined from 7075-T6 billet aluminum, this lightweight rear sprocket delivers race-proven durability without the weight penalty of steel alternatives.

Key Features:

• 42-tooth rear sprocket for precise gear ratio tuning
• Constructed from 7075-T6 billet aluminum for an optimal strength-to-weight ratio
• 100% CNC machined to the tightest tolerances for consistent, reliable performance
• Vortex patented saber tooth groove design increases sprocket longevity and reduces wear
• Silver anodized finish for corrosion resistance and clean aesthetics
• PTFE black hardcoat option available, bonding to aluminum for a more durable, low-friction surface

Vortex Racing has manufactured top-quality motorcycle racing components for motocross, supercross, road racing, flat track racing, and minibikes for over 15 years. Each component is tested on track with direct feedback from top professional race teams worldwide, ensuring this rear sprocket meets the demands of both competitive racers and performance street riders.