Vortex 425ZK-36 Aluminum Rear Sprocket 425 Pitch 36T

The Vortex 425ZK-36 is a high-performance aluminum rear sprocket designed for motorcycle applications requiring a 425 pitch chain and 36-tooth configuration. Engineered by Vortex Racing — a leader in aftermarket drivetrain components — this sprocket delivers an excellent balance of lightweight construction and durability for street and track use.

Key Features:

• Pitch: 425
• Teeth: 36T
• Material: 7075-T6 aluminum alloy for reduced rotating mass
• Hard anodized finish for corrosion resistance and extended service life
• Precision CNC-machined for exact fitment and consistent chain engagement
• Lightweight design reduces unsprung weight for improved handling and acceleration
• Compatible with standard 425 pitch drive chains

Vortex sprockets are a popular upgrade over OEM steel sprockets, offering significant weight savings without sacrificing strength. The ZK series is a trusted choice among sport bike riders and racers looking to fine-tune their final drive ratio.