Vortex 491ZK-43 Black 43-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 491ZK-43 is a 43-tooth, 520-pitch aluminum rear sprocket finished in a sleek black anodized coating. Engineered for motorcycle performance and longevity, this sprocket is CNC-machined in the USA from a specially formulated aluminum alloy built to Vortex's exacting specifications.

Key Features:

• 43 Teeth — 520-pitch rear sprocket for precise chain engagement
• Black Anodized Finish — Corrosion-resistant coating with contrasting silver machine cuts for a premium appearance
• Lightweight CAT5 Aluminum Construction — Reduces unsprung weight compared to stock steel sprockets
• 100% CNC Manufactured in the USA — Machined to tight tolerances for consistent fitment and performance
• Specially Formulated Alloy — Proprietary Vortex aluminum alloy balances strength and weight reduction
• Patented Tooth Design — Vortex's unique tooth profile promotes extended sprocket and chain life
• Race-Proven — Developed with feedback from professional race teams worldwide

Vortex has been manufacturing high-performance racing components since 1995, and their sprockets are a trusted choice for both track and street riders seeking a direct OEM replacement or a performance upgrade. The 491ZK-43 is sold individually as a rear sprocket only; chain and front sprocket are sold separately.