At DMG Motorsports, we present the Vortex CAT5 Rear Aluminum Sprocket, 42T-530, Black for Yamaha (Part #840ZK-42) — a race-bred sprocket built for riders who demand the perfect blend of style, strength, and performance. Vortex is a name trusted throughout the paddock, and this CAT5 sprocket brings that championship pedigree straight to your Yamaha's drivetrain. Each sprocket is anodized in black before it's precision CNC machined, revealing striking silver highlights on the machined surfaces for a look that's as aggressive as it is functional.

Features:

• Anodized-then-machined process: Anodized in color first then CNC machined from 7075 aluminum to produce a trick colored sprocket with silver highlights
• Premium 7075 aluminum construction for a lightweight yet durable rear sprocket built to handle serious riding
• Unique tooth design: Saber tooth grooves; unique tooth design increases sprocket longevity
• 100% CNC manufactured in the USA using a specially formulated alloy per Vortex specifications
• Race-proven reliability: Racing champions trust the proven design of the CAT5 Vortex aluminum sprocket because of its tight tolerances and unique tooth design
• 42-tooth count in a 530 chain pitch, direct-fit for compatible Yamaha models
• Bold black anodized finish with contrasting silver machined accents for a custom, race-inspired appearance
• Vortex patented sprocket design unlike any other sprocket on the market