Vortex CK6359 HFRA Hyper Fast Conversion Chain and Sprocket Kit - 520

The Vortex CK6359 is an HFRA (Hyper Fast) 520 Conversion Chain and Sprocket Kit designed for Yamaha motorcycles. This complete drive kit converts your drivetrain to the lighter, performance-oriented 520 chain pitch, delivering improved acceleration and reduced rotating mass for street and track riders alike.

The HFRA configuration features gearing that is one tooth down in front and two teeth up in the rear, paired with a hardcoat aluminum rear sprocket—an ideal setup for sharper throttle response and quicker corner exits.

Key Features:

• Hyper Fast (HFRA) 520 conversion gearing: 1 down front, 2 up rear for enhanced acceleration
• Hardcoat aluminum rear sprocket — F5 PTFE Black Hardcoat hard-anodized finish for maximum durability and reduced weight
• 7075-T6 aerospace-grade aluminum rear sprocket construction for optimal strength-to-weight ratio
• Drilled chromoly steel front sprocket to further reduce rotating mass
• Vortex Performance Links chain made in Japan to the highest quality specifications in the industry
• RV3 Series chain featuring a 3-pocket sealing system with up to 10 times the wear life of standard O-ring chains
• Rivet-type master link included — clip-type master link available separately
• No chain cutting required — ready to install right out of the box

Vortex chain and sprocket kits are trusted by performance riders for their superior craftsmanship, longevity, and the ability to fine-tune gear ratios for improved acceleration and top-end speed. This kit is an excellent upgrade over stock OEM drivetrain components.