Vortex 920-45 VTX Aluminum Rear Sprocket 45-Tooth

The Vortex 920-45 is a 45-tooth aluminum rear sprocket engineered for motorcycle riders who demand lightweight performance without sacrificing durability. Part of Vortex Racing's VTX series, this sprocket is a direct upgrade over heavy OEM steel units and is a popular choice for both street and track applications.

Key Features:

• Lightweight aluminum construction — significantly reduces rotating mass compared to OEM steel sprockets, improving throttle response and acceleration
• 100% CNC machined in the USA — manufactured to precise tolerances for consistent fitment and reliable power transfer
• Specially formulated alloy per Vortex specifications for an optimal balance of strength and weight
• Silver anodized finish — corrosion-resistant coating extends sprocket life and maintains appearance
• Unique Vortex tooth profile — patented sprocket design engineered for increased longevity and smooth chain engagement
• 45 teeth — increases the front-to-rear gear ratio for stronger low-end torque and improved acceleration

Vortex Racing sprockets are trusted by professional racing teams worldwide. The reduced rotational weight of an aluminum sprocket over a comparable steel unit translates directly to a more responsive feel on the throttle and better overall handling. Regular chain cleaning every 300–400 miles is recommended to maximize the lifespan of this aluminum sprocket.