Vortex 840A-37 Aluminum Rear Sprocket 520 Pitch 37 Tooth Silver

The Vortex 840A-37 is a lightweight aluminum racing rear sprocket designed for high-performance motorcycle applications. This 520 pitch sprocket features 37 teeth and is constructed from specially formulated 7075 T6 billet aluminum for optimal strength-to-weight ratio.

Key Features:

• 100% CNC manufactured in the USA for precise tolerances and quality
• Specially formulated aluminum alloy per Vortex specifications
• Silver anodized finish to prevent corrosion
• Patented tooth design increases sprocket longevity
• Lightweight construction reduces rotating mass for improved acceleration
• 520 pitch, 37 teeth configuration
• Sprocket dimensions: 5 bolt holes (10mm) with 100mm PCD (Pitch Circle Diameter) and 76mm inner diameter

Vortex sprockets feature a unique patented tooth profile that maximizes chain engagement and extends service life compared to standard sprocket designs. The lightweight aluminum construction is ideal for racing and performance street applications where reducing unsprung weight is critical. Made in the USA by Vortex Racing, a trusted name in motorcycle racing components since 1995.