Vortex 528C-45 Aluminum Rear Sprocket 525 Pitch 45-Tooth Silver

The Vortex 528C-45 is a lightweight, high-performance aluminum rear sprocket designed for motorcycle racing and performance street applications. Running a 525 pitch with 45 teeth, this silver-finish sprocket is engineered to reduce rotating mass while delivering reliable, consistent power transfer to the rear wheel.

Key Features:

• 525-pitch compatibility — designed to pair with standard 525-pitch chains
• 45-tooth rear sprocket — optimized for tuning acceleration and gearing ratio
• CNC machined from aluminum — 100% manufactured in the USA to tight tolerances
• Specially formulated alloy per Vortex Racing specifications for superior strength-to-weight ratio
• Silver anodized finish with a clear coating applied prior to cutting, providing corrosion resistance and the iconic two-tone machined look
• Patented unique tooth design — engineered to extend sprocket service life and reduce chain wear
• Significantly lighter than OEM steel sprockets, reducing unsprung and rotating weight

Vortex Racing sprockets are trusted by professional racers and serious enthusiasts alike. The 528C-45 is the ideal choice for riders seeking a performance rear sprocket in the 525-pitch format, whether for track days or spirited street riding. As with all aluminum sprockets, proper chain tension and regular cleaning every 300–400 miles will maximize service life.