Vortex 253CZK-39 525-Pitch 39-Tooth Black Steel Rear Sprocket

The Vortex 253CZK-39 is a 525-pitch, 39-tooth steel rear sprocket finished in a durable satin black electro-plated coating. Laser cut from carbon steel alloy to Vortex's precise specifications, this sprocket delivers the strength and reliability demanded by street riders and track enthusiasts alike.

Key Features:

• 525 Pitch — designed for use with 525-series chains
• 39 Teeth — maintains stock-equivalent gearing ratios on compatible applications
• Carbon steel construction — laser cut and manufactured to precise tolerances for consistent concentricity and long service life
• Satin black electro-plated finish — corrosion-resistant coating for lasting appearance and protection
• Lightening holes — strategic cutouts reduce rotating mass without sacrificing strength
• Vortex patented tooth design — unique profile engineered to maximize sprocket longevity and chain engagement

The 253CZK-39 is a direct-fit replacement sprocket built to OEM mounting specifications. Whether upgrading worn stock hardware or refreshing a chain-and-sprocket kit, this Vortex steel sprocket provides a proven combination of durability, performance, and value.