Vortex 196AV4-40 V4 Aluminum Rear Sprocket 40-Tooth Silver

The Vortex 196AV4-40 is a 40-tooth aluminum rear sprocket built on Vortex's next-generation V4 design — a significant evolution from the iconic CAT5 platform. The V4 pattern delivers a 10–15% reduction in weight compared to its predecessor without sacrificing structural integrity, thanks to a refined lightening hole pattern and fully machined faces on both sides.

Like all Vortex aluminum sprockets, the 196AV4-40 is 100% CNC machined in the USA from a specially formulated aluminum alloy to ensure precise concentricity and consistent tooth geometry. The standard silver finish features a clear protective coating applied before the sprocket is cut, resulting in Vortex's signature two-tone machined appearance while helping to resist oxidation.

Key Features:

• V4 design — 10–15% lighter than the CAT5 generation with no strength compromise
• 100% CNC machined in the USA from aerospace-grade aluminum alloy
• 40 teeth for precise gear ratio tuning
• Lightening holes reduce rotating mass for improved throttle response and acceleration
• Clear-coated silver finish for corrosion and oxidation resistance
• Engineered to precise concentricity specifications for smooth, quiet chain engagement
• Compatible with matching-pitch chain — front and rear sprockets must share the same chain pitch

Vortex aluminum sprockets are a popular choice for road racing, track days, and performance street riding where weight savings translate directly to improved response. For maximum service life, clean the chain and sprocket every 300–600 miles on street bikes and maintain proper chain tension.