Vortex 193AZK-51 Aluminum Rear Sprocket Chain Sprockets - CAT5 520 51-Tooth Black

The Vortex 193AZK-51 is a lightweight CAT5 aluminum rear sprocket featuring a 51-tooth count and 520 chain pitch with a black anodized finish. Engineered for performance-focused riders, this sprocket is precision CNC-machined from a specially formulated 7075 aluminum alloy developed to Vortex's exact specifications, delivering an ideal balance of strength and weight savings over steel alternatives.

Vortex's proprietary anodizing process is applied before final machining, ensuring the anodized layer penetrates deep into the material for superior wear resistance and a finish that holds up under demanding riding conditions. The patented tooth profile is engineered to optimize chain engagement, promote smooth power transfer, and extend overall sprocket life.

Key Features:

• 51-Tooth / 520 Chain Pitch — direct replacement fitment for compatible BMW motorcycles
• CNC-Machined 7075 Aluminum — specially formulated alloy per Vortex specifications for maximum strength-to-weight ratio
• Anodized First Technology — anodized before machining for deeper penetration and longer-lasting finish
• Patented Tooth Design — unique profile improves chain engagement, power delivery, and sprocket longevity
• Black (AZK) Finish — aggressive, race-inspired look that complements modern sport and naked bike aesthetics
• Lightweight Construction — significant weight reduction compared to OEM steel sprockets

The 193AZK-51 is part of Vortex Racing's trusted CAT5 sprocket lineup, a go-to choice for both track day enthusiasts and street performance riders seeking proven aftermarket drivetrain upgrades.