Vortex 491-39 Silver 39-Tooth Aluminum Rear Sprocket

The Vortex 491-39 is a silver, 39-tooth aluminum rear sprocket engineered for high-performance motorcycle applications. Manufactured 100% in the USA from 7075 T6 billet aluminum, it delivers an exceptional strength-to-weight ratio that reduces rotating mass without sacrificing durability.

Key Features:

• 100% CNC machined with Vortex's signature saber tooth grooves for precise fit and extended longevity
• 7075 T6 aircraft-grade billet aluminum construction — lightweight yet built to handle demanding riding conditions
• Silver anodized finish provides corrosion resistance and a clean, motorsport-inspired appearance
• Vortex patented tooth profile — a unique design unlike any other sprocket on the market
• 39-tooth rear sprocket — part of Vortex's 491 series fitment group
• Precision machined to the tightest tolerances for true concentricity and smooth chain engagement

The Vortex 491-39 rear sprocket is a direct-fit upgrade over OEM, offering reduced unsprung weight and improved drive efficiency. Vortex Racing components are developed and tested by professional racers across AMA Superbike, Supercross, and motocross competition, ensuring race-proven performance you can rely on at the track or on the street.