Vortex 840CZR-51 Aluminum Rear Sprocket 51 Tooth 520 Pitch Silver

The Vortex 840CZR-51 is a lightweight aluminum racing rear sprocket featuring 51 teeth and designed for 520-pitch chains. This premium sprocket is engineered for aftermarket wheel applications, particularly BST wheels, and delivers the performance advantage serious riders demand.

Key Features:

• 100% CNC machined in the USA from specially formulated aluminum alloy
• Silver anodized finish prevents corrosion while maintaining attractive appearance
• Vortex patented tooth design increases sprocket longevity and chain engagement
• Lightweight construction reduces rotating mass for improved acceleration and handling
• Precision machined to the tightest tolerances for perfect fitment
• 5-bolt pattern with 10mm holes, 100mm PCD (Pitch Circle Diameter), and 76mm inner diameter

Vortex Racing has manufactured top-quality motorcycle racing components in the USA since 1995, with direct feedback from professional race teams worldwide. Each sprocket is built from aerospace-grade materials and engineered to achieve maximum strength while minimizing weight. The unique CNC-machined design and silver anodized finish combine race-proven performance with lasting durability.