Vortex 491-40 Silver 40-Tooth Aluminum Rear Sprocket

The Vortex 491-40 is a silver, 40-tooth aluminum rear sprocket engineered for high-performance motorcycle applications. Machined from 7075-T6 billet aluminum, this sprocket delivers an exceptional strength-to-weight ratio, making it an ideal upgrade for sport bike and track riders looking to reduce unsprung rotational mass without sacrificing durability.

Vortex's patented Saber Tooth groove design sets this sprocket apart from conventional offerings. The unique tooth profile is engineered to reduce chain wear and extend overall sprocket longevity — a key advantage for both street and track use.

Key Features:

• 40-tooth rear sprocket — silver anodized finish
• 100% CNC machined from 7075-T6 billet aluminum for lightweight, high-strength construction
• Vortex patented Saber Tooth groove design for enhanced longevity and reduced chain wear
• Available with optional PTFE black hardcoat finish, which bonds to the aluminum for a more durable, low-friction surface
• Precision-manufactured to tight tolerances for smooth, reliable power transfer
• Part of Vortex's 491 series rear sprocket lineup

Vortex Racing has been producing championship-level drivetrain components since 1995. The 491-40 rear sprocket is a direct bolt-on upgrade that reflects the same quality standards trusted by professional racing teams worldwide.