Vortex 317ZLV4-42 VTX Aluminum Rear Sprocket 42T

The Vortex 317ZLV4-42 is a 42-tooth aluminum rear sprocket from Vortex Racing's popular VTX series, engineered for riders who demand lightweight performance without sacrificing durability. Machined from high-grade 7075-T6 aluminum alloy, this sprocket delivers a significant weight savings over OEM steel units while maintaining the strength needed for both street and track use.

Key Features:

• 42-tooth rear sprocket for optimized gearing and acceleration
• Precision-machined from 7075-T6 aluminum alloy for maximum strength-to-weight ratio
• Hard-anodized finish for corrosion resistance and extended wear life
• CNC-machined for consistent tooth profile and smooth chain engagement
• Lightweight design reduces unsprung and rotating mass for improved handling
• Compatible with standard O-ring, X-ring, and Z-ring drive chains
• Direct bolt-on replacement — no modification required

The Vortex VTX aluminum rear sprocket is a top choice among sport bike enthusiasts and club racers looking to fine-tune their drive ratio. Whether dialing in corner-exit acceleration on the track or improving throttle response on the street, this sprocket is a proven upgrade over stock.