Vortex 490ZK-48 CAT5 Aluminum Rear Sprocket 48-Tooth Black

The Vortex 490ZK-48 is a 48-tooth black anodized CAT5 aluminum rear sprocket designed for high-performance street and racing applications. Built by Vortex Racing — a U.S.-based manufacturer with over 15 years of experience supplying championship-level teams — this sprocket delivers the precision and durability demanded by serious riders.

Key Features:

• 48-Tooth Count: Optimized tooth count for performance gearing tuning
• CAT5 Aluminum Construction: CNC-machined from a specially formulated aluminum alloy per Vortex specifications for lightweight strength
• Black Anodized Finish: Hard-anodized black finish with contrasting silver machine cuts for durability and appearance
• Lightening Holes: Strategically placed cutouts reduce rotating mass without sacrificing structural integrity
• Unique Tooth Profile: Vortex patented sprocket tooth design promotes smooth chain engagement and extended sprocket longevity
• Precision Manufactured: 100% CNC-machined in the USA to the tightest tolerances for optimal concentricity and chain alignment

Vortex rear sprockets are a direct upgrade over OEM units, offering reduced unsprung weight and the ability to fine-tune gear ratios for improved acceleration or top-end speed. Trusted by professional racers across AMA Superbike, Supercross, and motocross competition, Vortex components are built to perform under the most demanding conditions.