Vortex CK6389 GFRA 520 Conversion Chain and Sprocket Kit 14/46 Tooth Black

The Vortex CK6389 is a GFRA "GoFast" 520 Conversion Street Chain and Sprocket Kit featuring a 14-tooth front sprocket and a 46-tooth hardcoat aluminum rear sprocket. This kit delivers a performance gearing drop of one tooth in front with a stock-equivalent rear, optimizing low-end acceleration and throttle response for street riding.

The rear sprocket is constructed from 7075-T6 aerospace-grade aluminum, the highest-grade material available for sprocket manufacturing, offering an exceptional balance of light weight and long-term durability. The F5 PTFE Black Hardcoat finish begins with a hard anodizing process followed by a PTFE (polytetrafluoroethylene) overcoat for added lubricity, keeping the sprocket cleaner and extending its service life.

The kit includes the Vortex SX3 520-pitch chain, featuring the proprietary Tri-Glide seal design. This X-ring geometry creates three pockets of lubrication, significantly reducing heat and friction compared to standard O-ring chains and improving overall wear life.

Kit Contents:

• 1x 14-tooth induction-hardened steel front (countershaft) sprocket
• 1x 46-tooth F5 PTFE Black Hardcoat 7075-T6 aluminum rear sprocket
• 1x Vortex SX3 520-pitch chain — 114 links
• Rivet-type master link included

Key Features:

• 520 pitch conversion — narrower and lighter than many OEM chain sizes
• GFRA "GoFast" gearing — one tooth down in front for improved acceleration
• F5 PTFE Hardcoat aluminum rear sprocket — ultra-light, ultra-tough, stays cleaner longer
• 7075-T6 aluminum construction — premium aerospace-grade alloy for maximum strength-to-weight ratio
• SX3 Tri-Glide X-ring chain — three-pocket lubrication seal for reduced heat and friction
• Reduces rotating mass for improved power delivery and feel
• Ready to install — no chain cutting required

The Vortex CK6389 is an ideal upgrade for riders looking to sharpen throttle response and reduce drivetrain weight through a complete, matched chain and sprocket conversion kit.