Vortex 526AZUV4-42 VTX Aluminum Rear Sprocket Pitch Sprockets - 42-Tooth 525

The Vortex 526AZUV4-42 is a 42-tooth aluminum rear sprocket designed as a high-performance replacement for sport and powersports applications. Engineered by Vortex Racing — a trusted name in precision drivetrain components — this sprocket is manufactured from high-grade 7075-T6 aluminum for an optimal balance of strength and reduced rotating mass.

Key Features:

• 42-Tooth rear sprocket configuration for tunable gearing ratios
• Manufactured from lightweight, high-strength 7075-T6 aluminum alloy
• Hard anodized finish for corrosion resistance and extended service life
• Compatible with 525/526 pitch chain
• CNC-machined to tight tolerances for precise chain engagement and smooth power delivery
• Significantly lighter than OEM steel sprockets, reducing unsprung and rotating weight
• Direct bolt-on replacement — no modifications required

Vortex sprockets are produced on state-of-the-art CNC equipment and are a popular choice among riders seeking performance gains through drivetrain optimization. The 526AZUV4-42 offers a straightforward upgrade path for riders looking to fine-tune acceleration, top speed, or fuel efficiency through gear ratio changes.