Vortex 642AZKV4-48 V4 Aluminum Rear Sprocket 48-Tooth Black Anodized

The Vortex 642AZKV4-48 is a 48-tooth aluminum rear sprocket built on Vortex Racing's latest V4 platform — the next generation of their proven aluminum sprocket line. Featuring a black anodized finish, this sprocket delivers the weight savings and performance characteristic of Vortex's race-developed drivetrain components.

Key Features:

• V4 Generation Design — refined pattern focused on optimal structural integrity with machined faces on both sides, achieving a 10–15% reduction in weight over the previous generation without sacrificing strength
• 48-Tooth Rear Sprocket — increases low-end torque and acceleration response
• Black Anodized Finish (AZK) — anodized coating applied before the sprocket is cut, producing the iconic two-tone machined look while protecting against corrosion
• 100% CNC Machined in the USA — manufactured to precise tolerances for concentricity and consistent fit
• Specially Formulated Aluminum Alloy — per Vortex specifications for the ideal balance of weight and durability
• Vortex Patented Tooth Design — unique profile engineered to increase sprocket longevity and smooth chain engagement
• Lightweight Construction — reduces rotating mass for improved acceleration, deceleration, and throttle response

Vortex aluminum sprockets are well-suited for road racing, track days, and high-performance street applications where rotational weight reduction is a priority. Proper chain maintenance — cleaning and tensioning every 300–600 miles on street bikes — is recommended to maximize the life of aluminum sprockets. MPN: 642AZKV4-48