Vortex 337-40 Aluminum 40-Tooth 520 Rear Sprocket

The Vortex 337-40 is a lightweight 40-tooth aluminum rear sprocket designed for high-performance motorcycle applications. Part of Vortex's popular 337 series, this sprocket is engineered for riders who demand precision, durability, and weight savings over a stock steel sprocket.

Key Features:

• 40 Teeth – optimized tooth count for balanced acceleration and top-end performance
• 520 Chain Pitch – compatible with standard 520 drive chains
• Aircraft-Grade Aluminum Construction – specially formulated alloy per Vortex specifications for maximum strength-to-weight ratio
• Patented Vortex Sprocket Design – unique tooth profile engineered for smooth chain engagement and extended wear life
• Silver Finish – clean, classic appearance that complements most motorcycle drivetrains
• Significant Weight Reduction – lighter than OEM steel sprockets, reducing unsprung and rotating mass

The Vortex 337-40 rear sprocket is a direct-fit upgrade trusted by racers and street riders alike. It delivers the precision machining and consistent quality that Vortex Racing is known for, making it an ideal replacement or performance upgrade for compatible motorcycles.