Vortex 251AV4-45 VTX Aluminum Rear Sprocket 45-Tooth

The Vortex 251AV4-45 is a 45-tooth aluminum rear sprocket from Vortex's VTX series, engineered for motorcycle enthusiasts seeking a lightweight, high-performance alternative to the OEM steel sprocket. Precision-machined from aircraft-grade aluminum alloy, this sprocket delivers an excellent strength-to-weight ratio while reducing unsprung rotational mass for improved throttle response and handling dynamics.

Key Features:

• 45-tooth rear sprocket — ideal for tuning final drive gearing to your riding style or track conditions
• Aircraft-grade aluminum construction — significantly lighter than stock steel sprockets, reducing unsprung weight
• Precision CNC-machined for tight tolerances and consistent chain engagement
• Hard anodized finish for corrosion resistance and extended service life
• Direct OEM replacement fitment using the 251-series carrier pattern
• Compatible with standard motorcycle drive chains

Vortex Racing is a trusted name in the powersports aftermarket, producing sprockets, clip-ons, rear sets, and related components to OEM and racing-grade standards. The VTX aluminum sprocket line is a popular upgrade for sport bike riders looking to fine-tune acceleration or top-speed characteristics without sacrificing reliability.