Vortex 253ZB-39 Rear Sprocket 39-Tooth 520 Pitch

The Vortex 253ZB-39 is a 39-tooth rear sprocket designed as a high-quality replacement or performance upgrade for motorcycles using a 520-pitch chain. Manufactured by Vortex Racing, this sprocket is precision-machined from 7075-T6 aluminum alloy for an optimal balance of lightweight performance and durability on both street and track applications.

Key Features:

• Tooth Count: 39 teeth
• Chain Pitch: 520
• Material: 7075-T6 aluminum alloy
• Finish: Hard anodized for corrosion resistance and extended wear life
• Precision CNC machined for consistent fit and smooth chain engagement
• Lightweight construction reduces unsprung rotating mass for improved throttle response
• Direct OEM-style bolt pattern for straightforward installation

Vortex is a trusted name in the powersports industry, known for producing race-proven drivetrain components. The 253ZB-39 rear sprocket is an ideal choice for riders looking to fine-tune their gearing ratio for acceleration, top speed, or track-specific performance goals.