Vortex CK6398 HFRS Hyper Fast 520 Black Chain and Sprocket Kit

The Vortex CK6398 is a HFRS "Hyper Fast" 520 Conversion Street Chain and Sprocket Kit finished in black. Designed as a complete bolt-on drivetrain upgrade, this kit delivers improved low-end acceleration and reduced rotating mass compared to your stock chain and sprocket setup.

Key Features:

• 520 Conversion Kit — lighter, narrower 520-pitch chain and sprockets reduce unsprung rotational weight
• Hyper Fast (HFRS) Gearing — geared one tooth down in front and two teeth up in the rear for quicker acceleration
• Laser-Cut Steel Rear Sprocket — precision manufactured with hardened teeth for maximum wear resistance and long service life
• Induction-Hardened Steel Front Sprocket — drilled lightening holes reduce rotating mass; high-carbon steel with special nickel plating resists corrosion
• Vortex SV3 or RV3 Chain — tri-glide seal design reduces heat and friction for improved wear life over standard O-ring chains
• Black Finish — satin black electro-plated finish for a clean, aggressive appearance
• Complete Kit — includes front sprocket, rear sprocket, chain, and master link; everything needed for a full drivetrain replacement

Vortex is a U.S.-based manufacturer with deep roots in professional motorcycle racing, supplying components to top race teams across Motocross, Supercross, Road Racing, and Flat Track disciplines. Every component is manufactured to tight tolerances using race-proven materials. The CK6398 is the black-finish version of this kit; the gold-finish equivalent is the CKG6398.