Vortex 543A-42 Aluminum Rear Sprocket 42-Tooth 520 Pitch

The Vortex 543A-42 is a 42-tooth, 520-pitch aluminum rear sprocket engineered for high-performance motorcycle applications. Manufactured 100% in the USA using CNC machining, this sprocket is built to the tightest tolerances with aerospace-grade aluminum billet construction for reduced rotating mass and optimal power transfer.

Key Features:

• 42-Tooth / 520 Pitch — drop-in replacement or performance upgrade for 520-chain equipped motorcycles
• 100% CNC Machined in the USA — precision manufacturing to exacting tolerances
• Lightweight Aluminum Construction — reduces rotating mass for improved acceleration, deceleration, and directional changes
• Vortex Patented Tooth Design — unique profile engineered to increase sprocket longevity and reduce chain wear
• Anodized Finish — corrosion-resistant surface treatment for lasting durability
• Race-Proven Performance — tested with professional race teams across Motocross, Supercross, Road Racing, and Flat Track disciplines

The Vortex 543A-42 allows riders to fine-tune their gear ratio for improved low-end torque or top-end speed depending on application. Whether replacing worn OEM gearing or optimizing performance, this sprocket delivers the quality and reliability that Vortex Racing is known for worldwide.