Vortex 840ZK-54 CAT5 Rear Sprocket 54T Black Contrast Cut 530 Pitch

The Vortex 840ZK-54 is a premium CAT5 series rear aluminum sprocket designed specifically for aftermarket wheels including BST, Rotobox, Marchesini, Marvic, PVM, and Core Moto Apex-6 applications. This 54-tooth sprocket features Vortex's distinctive contrast cut finish, where the sprocket is anodized black first, then precision CNC machined to reveal eye-catching silver highlights on the tooth profiles and accents.

Key Features:

• Manufactured from 7075-T6 aerospace-grade aluminum for exceptional strength-to-weight ratio
• 100% CNC machined in the USA to tight tolerances
• Vortex patented tooth design increases chain hold, release, and sprocket longevity
• Black anodized finish with machined silver accents creates a distinctive appearance
• Lightweight construction reduces rotating mass for improved acceleration
• 530 pitch chain compatibility
• 5-bolt pattern with 10mm holes, 100mm PCD (Pitch Circle Diameter), and 76mm inner diameter

Trusted by professional race teams in AMA Superbike, Pro Street Drag Racing, and road racing series worldwide. Vortex sprockets deliver the precision engineering and durability demanded by championship-level competition while offering improved performance for street and track enthusiasts.