Vortex 491AZK-49 Aluminum Rear Sprocket 49T

The Vortex 491AZK-49 is a high-performance 49-tooth aluminum rear sprocket engineered for competitive and street riders who demand precision, durability, and reduced rotating mass. Machined from high-grade 7075 aluminum alloy and hard anodized for corrosion resistance, this sprocket delivers a superior strength-to-weight ratio compared to steel alternatives.

Key Features:

• 49-Tooth Rear Sprocket for optimized acceleration and low-end torque
• 7075 Aluminum Construction — lightweight and heat-treated for maximum strength
• Hard Anodized Finish for enhanced wear resistance and corrosion protection
• CNC Precision Machined to strict tolerances for smooth, consistent chain engagement
• Direct OEM Replacement — bolt-on fitment with no modifications required
• Compatible with Standard Chain Pitch — verify chain pitch and bolt pattern for your application

Vortex sprockets are a trusted choice among racers and performance riders worldwide. The 491AZK-49 is ideal for riders looking to improve throttle response and acceleration characteristics without sacrificing reliability. Pairs perfectly with Vortex chain and front sprocket combinations for a complete drivetrain upgrade.