Vortex 314ZK-40 420 Aluminum Rear Sprocket 40-Tooth Black

The Vortex 314ZK-40 is a 40-tooth, 420-pitch aluminum rear sprocket engineered for high-performance motorcycles and dirt bikes. Black anodized for a clean, aggressive look, this sprocket is precision-manufactured to Vortex's exacting standards and built to deliver reliable power transfer with reduced rotating mass.

Key Features:

• 420 Chain Pitch – Designed for use with standard 420-pitch drive chains
• 40-Tooth Configuration – Stock-replacement or gearing-tuned tooth count for optimized acceleration and drive performance
• Lightweight 7075-T6 Aerospace Aluminum – Reduces rotating mass and improves throttle response
• 100% CNC Machined in the USA – Precision-manufactured individually for the tightest tolerances
• Specially Formulated Alloy – Made to Vortex's proprietary material specifications for strength and longevity
• Black Anodized Finish – Corrosion-resistant coating with machined contrast accents
• Ideal Tooth Design™ – Vortex's patented tooth profile optimizes chain engagement, reduces friction, and extends sprocket and chain life
• Built-In Mud Grooves – Helps clear debris to maintain clean, consistent chain operation

Vortex is a U.S.-based manufacturer trusted by professional race teams across Motocross, Supercross, Road Racing, and Flat Track Racing. The 314ZK-40 is a direct-fit replacement or performance upgrade for riders looking to fine-tune their gearing ratio or replace a worn OEM sprocket with a premium aftermarket unit.