Vortex 635AZK-38 Aluminum Rear Sprocket 38-Tooth Black Anodized

The Vortex 635AZK-38 is a 38-tooth aluminum rear sprocket featuring a black anodized finish. Engineered for performance-oriented riders, this sprocket is CNC machined from aerospace-grade aluminum, delivering a significant weight reduction over steel while maintaining the strength and precision required for street and track use.

Key Features:

• Material: Aerospace-grade aluminum construction for reduced rotating mass
• Finish: Black anodized (AZK) for corrosion resistance and aggressive styling
• Tooth Count: 38 teeth
• Chain Pitch: 635 series fitment
• Manufacture: 100% CNC machined to precise tolerances
• Design: Vortex patented tooth profile for increased sprocket longevity
• Performance: Reduces rotational mass to improve throttle response and acceleration

The Vortex 635AZK-38 aluminum rear sprocket is a direct OEM-style replacement that delivers measurable performance gains. The black anodized finish provides a clean, race-inspired look while protecting against the elements. Pair with a compatible front sprocket and chain for a complete drivetrain upgrade.