Vortex CK2225 520 GFRA Chain and Sprocket Kit 14/43 Tooth

The Vortex CK2225 is a complete GFRA (Go Fast) 520 chain and sprocket kit designed for riders looking to improve acceleration with a shorter front gear ratio. This ready-to-install kit requires no chain cutting and includes a steel front sprocket, hardcoat aluminum rear sprocket, and a premium Vortex SV3 series chain.

Chain — Vortex 520SV3 Series:

• Chain Type: 520SV3 (X-ring sealed)
• Chain Links: 108
• Chain Color: Black
• Tensile Strength: 8,500 lbs
• Manufactured in Japan to the highest quality industry specifications
• Dual-pocket sealing system delivers up to 7x longer wear life than standard O-ring chains
• Includes rivet-type master link — no chain cutting required

Sprocket Specifications:

• Front (Countershaft) Sprocket: 14-tooth steel
• Rear Sprocket: 43-tooth hardcoat aluminum
• F5 PTFE Black Hardcoat rear sprocket — hard anodized with a PTFE coating for added lubricity, extended wear life, and reduced buildup
• Constructed from 7075-T6 aerospace-grade aluminum for optimal strength-to-weight ratio
• Reduced rotating mass compared to OEM steel sprockets for improved throttle response and acceleration

Gearing Information:

• OE Gearing: 15/43
• Vortex Kit Gearing: 14/43 (one tooth down in front, stock rear)
• Shorter front sprocket ratio increases low-end torque and acceleration off the line

This 520 conversion kit is a direct performance upgrade over OEM gearing, shedding weight from the drivetrain while improving acceleration. The Vortex SV3 chain and hardcoat aluminum sprocket combination delivers race-proven durability for both street and track use.