Vortex CK5233 Chain and Sprocket Kit Quick Acceleration - 520SV3 15/43

The Vortex CK5233 is a complete 520 chain and sprocket kit engineered for performance-focused street riders seeking improved acceleration. This kit features a quick-acceleration gear ratio of 15/43 — one tooth down in the front from the stock 16/43 gearing — delivering stronger low-end pull and faster response off the line without requiring any chain cutting or modification for installation.

At the heart of this kit is the Vortex 520SV3 chain, manufactured in Japan to precision tolerances. The SV3 series chain uses a dual-pocket sealing system that retains lubrication more effectively than standard O-ring designs, resulting in significantly extended wear life. The kit includes a hardcoat anodized aluminum rear sprocket, which reduces rotational mass compared to steel for improved throttle response and acceleration feel.

Kit Specifications:

• Chain: Vortex 520SV3 — 114 links, Japan-made
• Chain Seal Type: Dual-pocket sealing system
• Front Sprocket: 15 teeth (steel, induction hardened)
• Rear Sprocket: 43 teeth (hardcoat aluminum)
• OE Gearing: 16/43
• Kit Gearing: 15/43 (one tooth under in front, stock rear)
• Chain Pitch: 520
• No chain cutting required — ready to install out of the box

Vortex chain and sprocket kits are developed with direct feedback from professional road racing teams, and every component is built to tight tolerances using premium materials. The 520 pitch conversion reduces overall drivetrain weight compared to larger-pitch OEM setups, which lowers rotational mass and frees up power to the rear wheel. Compare OE gearing to kit gearing before installation to confirm the gear ratio change meets your riding needs.