Vortex 154ZK-43 Black Aluminum Rear Sprocket 520 Pitch 43-Tooth

The Vortex 154ZK-43 is a black anodized aluminum rear sprocket featuring a 520 chain pitch and 43 teeth, engineered for performance motorcycle applications including Motocross, Supercross, Road Racing, and Flat Track Racing.

Vortex Racing sprockets are 100% CNC-machined in the USA from a specially formulated CAT5 aluminum alloy developed to Vortex's own specifications. The result is a sprocket that delivers an outstanding strength-to-weight ratio, shedding unsprung rotational mass compared to heavier steel alternatives. The satin black electro-plated finish provides corrosion resistance and a clean, race-ready appearance.

Key Features:

• 520 chain pitch — compatible with standard 520 drive chains
• 43-tooth rear sprocket for optimized final drive gearing
• CAT5 lightweight aluminum construction reduces unsprung weight
• 100% CNC manufactured in the USA to tight tolerances
• Black anodized / electro-plated finish resists corrosion
• Vortex's unique tooth profile design extends sprocket service life
• Direct bolt-on replacement — no modifications required

Vortex Racing is a U.S.-based manufacturer with decades of proven performance at the highest levels of professional motorcycle racing. The 154ZK-43 sprocket is an ideal upgrade or replacement for riders seeking a lightweight, durable, race-proven rear sprocket in a 43-tooth, 520-pitch configuration.