Vortex CKG4219 HFRA Hyper Fast Conversion Chain and Sprocket Kit - 520

The Vortex CKG4219 is an HFRA (Hyper Fast) 520 conversion chain and sprocket kit designed for street motorcycle applications. This performance-focused kit converts your drivetrain to a lighter 520-pitch chain and pairs it with a hardcoat aluminum rear sprocket for a notable reduction in rotating mass. The kit ships with a 15-tooth front sprocket and 43-tooth rear sprocket—one tooth down in front and two teeth up in rear compared to stock 16/41 OE gearing—for improved low-end torque and quicker acceleration.

Key Features:

• 520 Conversion Kit — Lighter 520-pitch drivetrain reduces rotating mass versus larger OEM chain sizes
• Kit Gearing: 15/43 — One down in front, two up in rear vs. OE gearing (16/41) for increased acceleration
• 520RX3 Gold Chain — 114 Links — RV3 Series chain made in Japan featuring a 3-pocket sealing system for up to 10× the wear life of standard O-ring chains
• Hardcoat Aluminum Rear Sprocket — F5 Hardcoat finish provides additional durability while keeping weight to a minimum
• Rivet-Type Master Link Included — Ready to install with no chain cutting required; clip-type master links also available separately
• Street Application — Engineered specifically for street and performance riding

All Vortex Performance Links chains are manufactured in Japan to exacting quality standards. The RX3 chain's triple-pocket seal design delivers exceptional lubricant retention and dramatically extended service life compared to conventional O-ring chains. This complete kit includes a front sprocket, hardcoat aluminum rear sprocket, and pre-sized gold 520RX3 chain — everything needed for a straightforward drivetrain upgrade.