Vortex 642AKV4-48 Aluminum Rear Sprocket 48-Tooth

The Vortex 642AKV4-48 is a 48-tooth aluminum rear sprocket designed as a high-performance aftermarket replacement for sport and street motorcycles. Machined from lightweight 7075-T6 or 6061-T6 aluminum alloy, this sprocket delivers a significant weight reduction over OEM steel sprockets without sacrificing durability under demanding riding conditions.

Vortex sprockets are precision CNC-machined to tight tolerances, ensuring smooth chain engagement, reduced drivetrain noise, and consistent power transfer from the engine to the rear wheel. The hard-anodized finish provides excellent corrosion resistance and extends service life even in wet or harsh riding environments.

Key Features:

• 48-Tooth rear sprocket for modified gearing and improved acceleration
• Lightweight aluminum construction reduces unsprung and rotating mass
• CNC-machined for precise tooth geometry and consistent chain engagement
• Hard-anodized finish for corrosion resistance and long service life
• Bolt pattern: AKV4 fitment pattern for compatible motorcycle models
• Drop-in OEM replacement with no modifications required
• Compatible with standard drive chain sizes for intended applications

Upgrading to a 48-tooth rear sprocket lowers overall gearing compared to a stock sprocket with fewer teeth, resulting in quicker acceleration and improved low-end torque — ideal for track use, tight circuits, or aggressive street riding. The Vortex 642AKV4-48 is a trusted choice among performance riders seeking a reliable, race-proven drivetrain upgrade.