Vortex 604ZK-35 CAT5 520 Aluminum Rear Sprocket 35-Tooth Black Anodized

The Vortex 604ZK-35 is a 35-tooth CAT5 aluminum rear sprocket designed for 520-pitch chain applications. Manufactured in the USA, this sprocket is machined from a specially formulated aluminum alloy to Vortex's exacting specifications and features a black anodized finish with contrasting silver machined accents.

Key Features:

• Lightweight aluminum construction reduces rotating mass for improved acceleration and throttle response
• 100% CNC manufactured in the USA to precise tolerances for concentricity and smooth power delivery
• Specially formulated aluminum alloy per Vortex specifications for optimal strength-to-weight ratio
• Black anodized finish with contrast-machined silver accents for a premium appearance
• Unique patented tooth design minimizes chain wear and extends both chain and sprocket service life
• 520 pitch compatible — matches 520-series chains
• 35 teeth — suitable for stock or performance-tuned gearing setups

Vortex Racing rear sprockets are trusted by professional racers across Motocross, Supercross, Road Racing, and Flat Track disciplines. The CAT5 series delivers race-proven performance and durability equally suited to track days and spirited street riding.