Vortex 425ZR-42 CAT5 Rear Sprocket 42-Tooth Red Anodized Aluminum

The Vortex 425ZR-42 is a lightweight CAT5 aluminum racing rear sprocket featuring 42 teeth and a vibrant red anodized finish with contrasting silver machine cuts. This high-performance sprocket is designed to reduce rotational mass compared to stock steel sprockets while providing exceptional durability and precise gearing adjustment capabilities.

Key Features:

• 42-tooth rear sprocket for 425 chain pitch
• Lightweight CAT5 aluminum construction for reduced unsprung weight
• 100% CNC manufactured in the U.S.A. to exacting tolerances
• Specially formulated aluminum alloy per Vortex specifications
• Patented Saber tooth groove design increases sprocket longevity
• Red anodized finish with contrasting silver highlights
• Color anodizing excludes sweeps, mud grooves and teeth for bright visual contrast
• Precision-machined tooth profile for smooth chain engagement

Vortex CAT5 sprockets represent a premium upgrade over standard steel sprockets, offering significant weight savings that improve acceleration and reduce rotational inertia. The unique tooth design and precision CNC manufacturing ensure consistent performance and extended service life, making them an ideal choice for both street and track applications.