Vortex 920ZR-49 VTX Aluminum Rear Sprocket Pitch Sprockets - 49-Tooth 920

The Vortex 920ZR-49 is a lightweight aluminum rear sprocket featuring a 920 chain pitch and 49-tooth count, designed for riders seeking a performance upgrade over heavier OEM steel sprockets. CNC-machined in the USA from a specially formulated aerospace-grade aluminum alloy, this sprocket delivers the precision and durability that Vortex Racing is known for across road racing and street applications.

Key Features:

• Chain Pitch: 920
• Tooth Count: 49 teeth
• Material: Specially formulated aluminum alloy per Vortex specifications
• 100% CNC-machined in the USA for tight tolerances and consistent fitment
• Anodized finish for corrosion resistance and long-term durability
• Reduced rotating mass compared to OEM steel sprockets for improved acceleration response
• Saber-tooth groove design channels debris away from the tooth interface, extending sprocket life
• Patented Vortex sprocket tooth profile for optimized chain engagement

Vortex aluminum rear sprockets are a popular choice among both competitive racers and performance street riders. The significant weight reduction over steel reduces unsprung and rotating mass, contributing to sharper throttle response and improved overall handling. Verify your chain pitch and bolt pattern before ordering to ensure proper fitment.