Vortex 151ZR-42 CAT5 420 Aluminum Rear Sprocket 42T Red

The Vortex 151ZR-42 is a CAT5 aluminum rear sprocket featuring a 420 chain pitch and 42 teeth, finished in a striking red anodize with contrasting silver machine-cut highlights. Designed for performance-minded riders, this sprocket delivers a lightweight upgrade over stock steel units without sacrificing durability.

Key Features:

• Lightweight CAT5 aluminum construction — machined from aerospace-grade aluminum per Vortex specifications for significant weight savings over OEM steel sprockets
• 100% CNC manufactured in the U.S.A. for precise tolerances and consistent fitment
• Patented saber tooth groove design — Vortex's unique tooth profile increases sprocket longevity and is unlike any other sprocket on the market
• 420 chain pitch / 42 teeth — compatible with 420-pitch drive chains
• Red anodized finish with bright silver machine-cut highlights on the teeth and grooves for a race-ready appearance
• Color anodizing applied to the body while teeth and functional surfaces retain a silver finish for a two-tone look

Vortex Racing sprockets are trusted by professional and amateur riders alike. Each CAT5 sprocket is built to exacting standards, making the 151ZR-42 an ideal direct-replacement or performance upgrade for riders seeking reduced unsprung weight and long-lasting drive train performance.