Vortex CK4235 Chain and Sprocket Kit Conversion with Hardcoat Aluminum Rear Sprocket - 520

The Vortex CK4235 is a complete, ready-to-install chain and sprocket kit engineered for performance-focused riders. No chain cutting is required — everything you need arrives pre-sized and ready to bolt on.

The kit includes a Vortex SV3 Series 520RV3 chain, manufactured in Japan to some of the highest quality standards in the industry. The SV3 chain features a dual pocket sealing system that delivers up to 7 times longer wear life compared to standard O-ring chains, making it an outstanding upgrade for street and track use.

Kit Specifications:

• Chain: 520RV3 — 110 links
• Chain Type: 520 conversion (SV3 Series with dual pocket seal)
• Front Sprocket: 16 teeth (steel)
• Rear Sprocket: 39 teeth (hardcoat aluminum)
• OE Gearing: 17 front / 39 rear
• Vortex Kit Gearing: 16 front / 39 rear (one tooth down in front, stock rear)
• Gearing Effect: Lower gear ratio for improved throttle response and faster acceleration

Key Features:

• Ready-to-install kit — no chain cutting required
• SV3 dual pocket sealing system for extended chain life
• Chain manufactured in Japan to strict quality specifications
• Hardcoat aluminum rear sprocket for a balance of light weight and durability
• 520 conversion format reduces unsprung rotating mass for improved handling
• GFRA (Go Fast) 520 conversion kit for enhanced acceleration performance

This kit provides a direct 520 conversion with a slightly shorter gearing ratio compared to OEM, resulting in crisper throttle response and quicker acceleration out of corners. The hardcoat aluminum rear sprocket keeps weight low while the SV3 chain ensures long-lasting, reliable power transfer.