Vortex 316ZRV4-42 VTX Aluminum Rear Sprocket 42T

The Vortex 316ZRV4-42 is a 42-tooth aluminum rear sprocket from Vortex's VTX series, engineered for performance-minded riders seeking a lightweight, durable alternative to OEM steel sprockets. Machined from high-grade 7075-T6 aluminum, this sprocket delivers significant unsprung weight savings while maintaining the strength and wear resistance demanded by street and track applications.

Key Features:

• 42-tooth rear sprocket for tunable gearing options
• Precision CNC-machined from 7075-T6 aluminum for strength and lightweight performance
• Hard anodized finish for corrosion resistance and extended service life
• Lightening holes reduce unsprung and rotating mass
• Precision-cut teeth for smooth, quiet chain engagement
• Direct OEM replacement fitment — no modifications required
• Compatible with standard chain pitch for the applicable application

Vortex sprockets are manufactured in the USA and are a trusted choice among racers and enthusiasts for their consistent quality and precision tolerancing. The 316ZRV4-42 is a direct bolt-on upgrade that can help optimize acceleration, top speed, or fuel efficiency depending on your gearing goals.