Vortex 253CZR-51 CAT5 520-Pitch 51-Tooth Aluminum Rear Sprocket

The Vortex 253CZR-51 is a 51-tooth, 520-pitch aluminum rear sprocket designed for performance street and track riders who demand precision-engineered drivetrain components. Built around Vortex Racing's iconic CAT5 sprocket design, this rear sprocket delivers the optimal combination of lightweight construction and long-lasting tooth geometry.

Key Features:

• 100% CNC manufactured in the USA to the tightest tolerances in the industry
• Constructed from specially formulated aluminum alloy per Vortex specifications for maximum strength-to-weight ratio
• Silver anodized finish applied before cutting, providing corrosion resistance while creating the iconic two-tone machined look
• Patented tooth design that is unlike any other sprocket on the market, engineered to increase sprocket longevity
• 51-tooth, 520-pitch configuration allows for fine-tuning of gear ratios for improved acceleration and bottom-end torque
• Reduces rotational mass compared to OEM steel sprockets, aiding in more efficient power transfer to the pavement

Vortex Racing rear aluminum sprockets are the choice of professional race teams and serious enthusiasts worldwide. The 253CZR-51 is a direct bolt-on upgrade that improves drivetrain efficiency while delivering the quality and durability that Vortex Racing is known for. For optimal performance and longevity, chain tension and cleanliness should be inspected regularly.