Vortex 427ZKV4-43 VTX Aluminum Rear Sprocket Sprockets - 43T

The Vortex 427ZKV4-43 is a high-performance aluminum rear sprocket designed for riders who demand lightweight precision without sacrificing durability. Part of Vortex's popular ZKV4 series, this sprocket is CNC-machined from 7075-T6 aircraft-grade aluminum, delivering a significant weight reduction compared to stock steel sprockets while maintaining exceptional strength under hard acceleration and sustained use.

Key Features:

• 43-tooth rear sprocket for optimized acceleration and throttle response
• CNC-machined from 7075-T6 aircraft-grade aluminum for superior strength-to-weight ratio
• Hard-anodized surface finish for increased wear resistance and corrosion protection
• Precision-cut teeth for smooth, consistent chain engagement and reduced drivetrain noise
• Lightweight construction reduces unsprung and rotating mass for improved handling
• Direct OEM-replacement fitment — no modifications required

The Vortex ZKV4 aluminum rear sprocket is a trusted upgrade among sport bike and street riders looking to fine-tune their gearing for track days or spirited street riding. The 43-tooth configuration provides a slight increase in low-end torque and acceleration over typical stock gearing. Compatible with standard chain pitch for the intended application, this sprocket pairs perfectly with Vortex's front sprockets and chain kits for a complete drivetrain refresh.