Vortex 251AV4-42 VTX Aluminum Rear Sprocket 42T

The Vortex 251AV4-42 is a high-performance VTX Series aluminum rear sprocket designed for demanding riders who want reduced unsprung weight and superior drivetrain performance. Machined from lightweight, high-strength aluminum alloy, this 42-tooth sprocket delivers a direct OEM-replacement fit with an upgrade in quality and durability.

Key Features:

• 42-Tooth configuration for optimized power delivery and gear ratios
• Lightweight aluminum construction reduces unsprung and rotating mass for improved handling and acceleration
• VTX Series design — Vortex's proven performance sprocket lineup trusted by racers and street riders
• Hard-anodized finish for increased surface hardness and corrosion resistance
• CNC machined to precise tolerances for smooth, consistent chain engagement
• Direct bolt-on fitment — no modifications required for compatible applications

Vortex Racing is a leading manufacturer of precision drivetrain components for motorcycles. The 251AV4-42 rear sprocket is built to perform on both the track and the street, offering a reliable upgrade over stock steel sprockets without sacrificing longevity when paired with a quality chain.