Vortex CK6243 Chain and Sprocket Kit Conversion with Hardcoat Aluminum Rear Sprocket - 520

The Vortex CK6243 is a complete, ready-to-install chain and sprocket kit designed for performance-oriented riders who demand durability and precision. No chain cutting is required — everything arrives pre-sized and ready to bolt on.

Key Features:

• Chain: Vortex 520RV3 Series, 114 links — manufactured in Japan to the highest quality standards in the industry
• SV3 Dual Pocket Sealing System: Delivers up to 7× longer wear life compared to standard O-ring chains
• Rear Sprocket: Hardcoat aluminum construction for reduced weight and improved durability
• 520 Conversion Kit: Converts to a lighter, narrower 520-pitch chain for improved performance
• Gearing — One Down in Front, Stock Rear: OE gearing 16/43 → Vortex kit gearing 15/43 for increased acceleration
• Complete kit — chain, front sprocket, and rear sprocket included
• No chain cutting required; ready to install out of the box

The SV3 Series chain features a dual pocket sealing system that locks in lubrication and keeps contaminants out far more effectively than conventional O-ring designs. Combined with a hardcoat aluminum rear sprocket, this kit offers an excellent balance of light weight and long service life.

The 15/43 gearing ratio (one tooth down in front versus the OE 16/43 setup) sharpens throttle response and improves acceleration out of corners — ideal for track use and spirited street riding. Riders looking to compare gear ratios should note the change from the stock configuration before installation.