Vortex 317ZK-53 520-Pitch 53-Tooth Black Aluminum Rear Sprocket

The Vortex 317ZK-53 is a 53-tooth, 520-pitch black anodized aluminum rear sprocket engineered for serious street and track riders. Precision-manufactured in the USA, this sprocket delivers a measurable performance upgrade over stock steel units by reducing rotating mass and improving power transfer to the rear wheel.

Key Features:

• 520-Pitch, 53-Tooth: Aggressive gearing option for enhanced low-end torque and acceleration
• Lightweight Aluminum Construction: CNC machined from high-grade aluminum alloy to Vortex's exact specifications, significantly lighter than OEM steel sprockets
• Black Anodized Finish: Hard anodized for a durable, corrosion-resistant black finish with contrasting silver machined highlights
• Patented Tooth Design: Vortex's unique tooth profile promotes consistent chain engagement and release, extending both sprocket and chain service life
• 100% CNC Manufactured in the USA: Machined to the tightest tolerances for precise concentricity and reliable performance
• Mud Grooves: Integrated grooves help clear debris and keep the drivetrain running cleanly

Vortex Racing sprockets are trusted by professional race teams worldwide and are a proven choice for riders looking to fine-tune their gear ratios for the track or spirited street riding. Always replace the sprocket in conjunction with a new chain for optimal drivetrain longevity.