Vortex 604-48 Aluminum Rear Sprocket 48-Tooth 520-Pitch Silver

The Vortex 604-48 is a 48-tooth, 520-pitch aluminum rear sprocket engineered for performance motorcycle applications. Machined to exacting tolerances in the USA, it delivers a lightweight drivetrain upgrade over heavy OEM steel sprockets while maintaining the durability and precision Vortex Racing is known for.

Key Features:

• Lightweight aluminum construction — significantly reduces unsprung and rotating mass compared to stock steel sprockets
• 100% CNC manufactured in the USA from a specially formulated alloy per Vortex specifications
• Silver anodized finish to resist corrosion and maintain appearance
• Patented tooth profile — Vortex's unique tooth geometry extends sprocket longevity and reduces chain wear
• 520 chain pitch — compatible with standard 520-series drive chains
• 48-tooth rear gearing — increases low-end acceleration and throttle response
• Precision concentricity — CNC manufacturing ensures true running and smooth power transfer

Vortex aluminum rear sprockets are the choice of professional racers competing in AMA Superbike, Supercross, and motocross. Proper chain maintenance every 300–400 miles is recommended to maximize sprocket life when running aluminum.