Vortex 438ZKV4-45 Aluminum Rear Sprocket Sprockets - CAT5 530-Pitch 45-Tooth Black

The Vortex 438ZKV4-45 is a 45-tooth, 530-pitch CAT5 aluminum rear sprocket designed for performance street and racing applications. Built to Vortex Racing's exacting standards, this sprocket delivers a measurable reduction in rotating mass compared to steel, translating directly to improved throttle response and drivetrain efficiency.

Key Features:

• CAT5 color anodizing — black anodized finish applied to the body while leaving sweeps, mud grooves, and teeth in contrasting silver for a distinctive look and corrosion resistance
• 530 chain pitch — compatible with standard 530-pitch drive chains
• 45 teeth — suited for applications requiring increased rear sprocket tooth count for improved low-end torque and acceleration
• Lightweight aluminum construction — reduces rotating mass for enhanced performance over stock steel sprockets
• Vortex patented tooth design — unique saber tooth groove geometry engineered to extend sprocket longevity and improve chain engagement
• 100% CNC manufactured in the USA — machined to tight tolerances from a specially formulated alloy per Vortex specifications
• V4 bolt pattern — designed for the specific hub bolt pattern designated by the V4 fitment code

Vortex Racing sprockets are a trusted choice among club racers and performance street riders seeking a direct OEM replacement upgrade. The 438ZKV4-45 pairs with a standard 530-pitch chain and installs using the factory rear sprocket carrier.