Vortex 253CZR-39 CZR 520 Chromoly Rear Sprocket 39T

The Vortex 253CZR-39 is a high-performance CZR series rear sprocket featuring a 39-tooth count in a 520 chain pitch configuration. Engineered by Vortex Racing, the CZR line is crafted from chromoly steel, delivering exceptional strength, wear resistance, and longevity compared to standard steel sprockets—making it a trusted choice for both track and street sport motorcycle applications.

Key Features:

• 39-Tooth Rear Sprocket – Optimized gearing for responsive acceleration and tuned power delivery
• CZR Chromoly Steel Construction – Superior hardness and durability for extended service life
• 520 Chain Pitch Compatibility – Designed for use with standard 520 drive chains
• Precision CNC Machined – Tight tolerances ensure smooth, consistent chain engagement
• Lightweight Design – Weight-optimized profile reduces unsprung rotational mass
• Vortex Racing Quality – Manufactured to meet the demands of competitive and performance street riding

The Vortex 253CZR-39 is a direct bolt-on replacement sprocket for compatible sport motorcycles, offering a straightforward upgrade path for riders looking to fine-tune their gearing ratio. Pair with a quality 520 chain for best results.