Vortex 525AZR-42 AZR Series Pitch Rear Sprocket Sprockets - 42-Tooth 525

The Vortex 525AZR-42 is a high-performance rear sprocket from Vortex Racing, engineered for serious street and track riders who demand precision, durability, and reduced unsprung weight. Designed for use with 525 pitch drive chains, this 42-tooth sprocket is manufactured to exacting tolerances for smooth, consistent power delivery.

Key Features:

• Chain Pitch: 525 (compatible with 525-series drive chains)
• Tooth Count: 42 teeth
• Series: AZR — Vortex's lightweight aluminum alloy sprocket line
• Material: High-strength 7075 aluminum alloy for an optimal balance of weight savings and durability
• Hard anodized finish for corrosion resistance and extended service life
• CNC-machined for precise tooth geometry and consistent chain engagement
• Drilled/lightened design reduces unsprung rotational mass for improved handling response

Vortex Racing is a trusted name in the motorsports industry, supplying sprockets to professional race teams and performance-minded riders worldwide. The 525AZR-42 is an ideal upgrade over heavy OEM steel sprockets, delivering measurable weight reduction without sacrificing reliability.