Vortex 435ZK-50 Black 50-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 435ZK-50 is a 50-tooth, 520-pitch aluminum rear sprocket engineered for performance-oriented motorcycle riders who demand precision, reduced weight, and superior durability. Machined from a specially formulated CAT5 aluminum alloy developed exclusively to Vortex specifications, this sprocket delivers race-proven strength without the weight penalty of steel alternatives.

Manufactured entirely in the USA using 100% CNC machining processes, every sprocket meets tight tolerances for concentricity and consistent chain engagement. The distinctive Vortex patented tooth geometry is engineered to extend sprocket life while maintaining optimal power transfer, and the anodized black finish with contrasting silver machine-cut accents gives it a premium appearance on any build.

Key Features:

• 50 teeth — rear position, 520 chain pitch
• CAT5 aluminum construction — specially formulated alloy per Vortex specifications for an ideal balance of strength and light weight
• 100% CNC machined in the USA — precision manufacturing for consistent fitment and performance
• Patented Vortex tooth design — unique geometry engineered to increase sprocket longevity
• Anodized black finish — with contrasting silver machine cuts for a clean, aggressive look
• Available in 4 color options across the Vortex 435 sprocket family
• Compatible with 520-size OEM applications and 520 chain conversion setups

The Vortex 435ZK-50 is an ideal upgrade for sport bike and street performance riders looking to shed rotating mass, sharpen throttle response, and add race-ready style to their drivetrain.