Vortex 405ZK-55 Aluminum Rear Sprocket 55T 420 Pitch Black

The Vortex 405ZK-55 is a high-performance aluminum rear sprocket designed for mini motorcycles and pit bikes. This 420-pitch sprocket features 55 teeth, making it ideal for riders seeking improved low-end torque and acceleration on smaller displacement bikes.

Key Features:

• Constructed from aerospace-grade 7075 T6 aluminum for exceptional strength-to-weight ratio
• Precision CNC machined for perfect fitment and reduced wear on chain and drivetrain components
• Black anodized finish for corrosion resistance and attractive appearance
• Vortex patented tooth design increases sprocket longevity and reduces chain friction
• Reduced rotating mass compared to steel sprockets for improved throttle response
• 55-tooth configuration provides excellent low-speed acceleration and control

The CAT5 series sprocket from Vortex Racing delivers professional-grade performance for mini bike enthusiasts looking to optimize their gearing. The lightweight aluminum construction helps reduce unsprung weight while maintaining durability for aggressive riding conditions.