Vortex 165-48 CAT5 Aluminum Rear Sprocket 48-Tooth 520 Pitch Black

The Vortex 165-48 is a lightweight CAT5 aluminum rear sprocket featuring 48 teeth and a 520 chain pitch. Engineered for sport bike and racing applications, this sprocket is precision CNC machined from 7075 aluminum and hardcoat anodized for a durable, track-proven finish with striking silver highlights.

Key Features:

• 48-tooth, 520-pitch rear sprocket — hardcoat black anodized finish
• 100% CNC manufactured in the USA from specially formulated alloy per Vortex specifications
• Precision machined from 7075 aluminum — anodized first, then CNC machined for a color finish with contrasting silver highlights
• Saber tooth grooves — unique tooth design engineered to increase sprocket longevity
• Vortex patented sprocket design unlike any other sprocket on the market
• Significantly lighter than OEM steel sprockets, reducing rotating mass for improved acceleration and handling
• Trusted by professional racing champions across AMA Sportbike, AMA Superbike, and motocross competition

The Vortex CAT5 rear sprocket is the go-to upgrade for riders looking to reduce drivetrain weight and sharpen throttle response. Also referenced as 165K-48.