Vortex 825A-57 Aluminum Rear Sprocket 57-Tooth 520 Pitch

The Vortex 825A-57 is a high-performance aluminum rear sprocket designed specifically for aftermarket racing wheels. This 57-tooth sprocket features 520 pitch chain compatibility and is precision-engineered for Marvic and Galespeed wheel applications.

Key Features:

• CNC machined from 7075 aerospace-grade aluminum for exceptional strength-to-weight ratio
• 57 teeth configuration for customized gearing options
• 520 pitch chain width for reduced rotating mass
• Silver anodized finish to prevent corrosion
• 100% manufactured in the USA to exacting tolerances
• Unique Vortex tooth design for increased sprocket longevity and optimal chain engagement

Fitment Specifications:

• Bolt circle: 100mm
• Bolt hole diameter: 10.5mm
• Number of bolt holes: 6
• Hub diameter: 80mm
• Compatible with Marvic and Galespeed aftermarket wheels

Vortex Racing sprockets are the trusted choice of championship racers worldwide. Their lightweight construction reduces rotating mass and aids in transferring more power to the pavement, while the precision CNC manufacturing ensures perfect chain engagement and extended component life.