Vortex 642C-57 CAT5 Aluminum Rear Sprocket 57 Tooth

The Vortex 642C-57 is a high-performance CAT5 aluminum rear sprocket featuring 57 teeth, engineered for riders seeking exceptional durability and weight savings. Manufactured from aerospace-grade 6061-T6 aluminum alloy, this sprocket delivers optimal power transfer while significantly reducing rotational mass compared to steel alternatives.

Key Features:

• Precision CNC-machined from 6061-T6 aluminum for superior strength-to-weight ratio
• Hard anodized finish for enhanced wear resistance and corrosion protection
• 57-tooth configuration for fine-tuning gear ratios and performance characteristics
• Self-cleaning mud grooves help prevent debris buildup
• Drilled lightening holes reduce weight without compromising structural integrity
• Compatible with 520, 525, or 530 pitch chains depending on application

Vortex CAT5 sprockets are trusted by professional race teams worldwide and undergo rigorous quality control to ensure consistent performance. Each sprocket is manufactured to exact OEM specifications for precise fitment and optimal chain engagement. The hard anodized surface treatment extends service life significantly beyond standard aluminum sprockets, making this an excellent choice for both street and track applications.