Vortex 151ZR-57 CAT5 420 Aluminum Rear Sprocket 57-Tooth Red

The Vortex 151ZR-57 is a CAT5 420-pitch aluminum rear sprocket with 57 teeth, finished in a striking red anodized color with bright silver machine-cut highlights. Designed as a lightweight, high-performance upgrade over stock steel sprockets, this sprocket is ideal for riders looking to fine-tune their gearing for improved acceleration and responsiveness.

Key Features:

• Lightweight aerospace-grade aluminum construction — significantly reduces unsprung rotational mass compared to OEM steel sprockets
• 100% CNC manufactured in the U.S.A. to precise tolerances for concentricity and consistent chain engagement
• Vortex patented saber-tooth groove design — unique tooth profile increases sprocket longevity and chain wear life
• Red anodized finish with contrasting silver machined cuts on sweeps and body; teeth remain silver for durability
• 420 chain pitch compatible — designed for use with standard 420-pitch drive chains
• Specially formulated aluminum alloy per Vortex Racing specifications for optimal strength-to-weight ratio
• 57-tooth rear sprocket — higher tooth count for increased low-end torque and acceleration

Vortex Racing sprockets are trusted by racers and street riders alike for their precision engineering and distinctive appearance. The CAT5 series delivers a genuine performance and aesthetic upgrade, combining race-proven durability with bold anodized color options.