Vortex 604ZK-52 Aluminum Rear Sprocket 520 Pitch 52-Tooth Black Anodized

The Vortex 604ZK-52 is a 52-tooth, 520-pitch CNC-machined aluminum rear sprocket featuring a black anodized finish with machined contrast accents. Manufactured in the USA to race-proven tolerances, this sprocket is engineered for riders who demand precision, durability, and performance from their drivetrain.

Key Features:

• 52-Tooth / 520 Pitch — designed for motorcycles equipped with 520-pitch chain drive systems
• Black Anodized with Machined Accents (ZK Series) — hard anodized finish for increased surface hardness and corrosion resistance, with CNC-machined contrast highlights
• 7075-T6 Billet Aluminum Construction — aerospace-grade alloy provides an excellent strength-to-weight ratio, significantly reducing rotating mass versus OEM steel sprockets
• 100% CNC Manufactured in the USA — machined to tight tolerances for concentricity and reliable chain engagement
• Patented Saber Tooth Groove Design — Vortex's proprietary tooth profile promotes even wear and extends sprocket life
• 604 Carrier Pattern — fits specific motorcycle models requiring the 604 bolt pattern; verify fitment before ordering
• Lightweight Design — reduces unsprung and rotating mass for improved throttle response and acceleration

Vortex Racing sprockets are tested on the track with direct feedback from professional race teams worldwide. The 604ZK-52 is a popular choice for riders looking to run taller rear gearing for increased top-end speed or to match a chain and sprocket conversion. Always replace the front sprocket and chain simultaneously for optimal performance and longevity.