Vortex 249ZK-45 F5 Black Hardcoat 45-Tooth 530-Pitch Rear Sprocket

The Vortex 249ZK-45 is a 45-tooth, 530-pitch rear sprocket machined from lightweight F5 aluminum alloy and finished in Vortex's durable PTFE black hardcoat. Designed for road racing and performance street riding, this sprocket delivers a winning combination of reduced rotating mass and exceptional wear resistance.

Key Features:

• 45 Teeth / 530 Pitch — drop-in replacement sizing for 530-chain applications
• F5 Lightweight Aluminum Construction — specially formulated alloy per Vortex specifications reduces unsprung and rotating weight
• PTFE Black Hardcoat Finish — Type III hard anodize with PTFE (Teflon-type) overcoat increases wear resistance and reduces friction
• Vortex Patented Tooth Design — unique saber-tooth groove profile extends sprocket longevity and promotes smooth chain engagement
• 100% CNC Machined in the USA — manufactured to tight tolerances for precise fit and consistent performance
• Anodized for Corrosion Resistance — protected against the elements for long service life on track or street

Vortex Racing has been producing championship-proven drivetrain components since 1995. The 249ZK-45 rear sprocket is an ideal upgrade or direct replacement for riders looking to fine-tune their final drive gearing with a lightweight, race-quality component.