Vortex 435KV4-45 VTX Aluminum Rear Sprocket Pitch Sprockets - 45T 520

The Vortex 435KV4-45 is a 45-tooth aluminum rear sprocket from Vortex's VTX series, engineered for performance motorcycle applications running a 520-pitch chain. Vortex is a leading manufacturer of precision-machined motorcycle drivetrain components, trusted by both competitive racers and performance street riders.

Constructed from high-strength 7075-T6 aluminum alloy, this sprocket delivers a significant weight reduction over steel alternatives without sacrificing durability. The hard anodized finish provides excellent resistance to corrosion and wear, helping maintain tooth geometry over extended service life.

Key Features:

• 45 teeth — increases torque and acceleration off the line
• 520 chain pitch compatibility for optimized power transfer
• 7075-T6 aircraft-grade aluminum construction for lightweight performance
• Hard anodized finish for enhanced durability and corrosion resistance
• Precision CNC-machined for exact fitment and consistent chain engagement
• Direct OEM-style bolt pattern for straightforward installation

The Vortex VTX rear sprocket is an ideal upgrade for riders seeking improved acceleration and reduced unsprung weight. The 45-tooth configuration provides a lower final drive ratio compared to stock, making it a popular choice for track day use and sport riding where quicker throttle response is a priority.