Vortex 170ZRV4-40 VTX Aluminum Rear Sprocket 40-Tooth

The Vortex 170ZRV4-40 is a lightweight aluminum rear sprocket from Vortex Racing's VTX series, featuring a 40-tooth configuration designed for performance street and track applications. Manufactured entirely in the USA, this sprocket delivers a meaningful reduction in rotating mass compared to stock steel units, contributing to improved throttle response and drivetrain efficiency.

Key Features:

• 100% CNC machined from aerospace-grade aluminum alloy per Vortex specifications for precision concentricity and durability
• 40-tooth rear sprocket for optimized gearing balance between acceleration and top speed
• Lightening holes reduce overall rotating mass for improved performance feel
• Anodized finish provides corrosion resistance and a clean appearance
• Unique tooth profile engineered to extend sprocket longevity and reduce chain wear
• Made in the USA — Vortex sprockets are trusted by racers and serious enthusiasts alike

The Vortex VTX aluminum rear sprocket is a direct-fit performance upgrade that pairs with standard motorcycle drive chains. For maximum drivetrain longevity, ensure the front sprocket and chain share the same pitch as this rear sprocket.