Vortex 839AV4-40 VTX Aluminum Rear Sprocket 40T

The Vortex 839AV4-40 is a 40-tooth aluminum rear sprocket from Vortex's VTX series, engineered for performance motorcycle applications. Machined from high-grade aluminum alloy, this sprocket delivers a significant weight reduction over stock steel sprockets without sacrificing durability or performance.

Key Features:

• 40-Tooth rear sprocket configuration for optimized acceleration and gear ratio tuning
• Precision-machined from lightweight aluminum alloy for reduced unsprung weight
• Hard anodized finish for corrosion resistance and long service life
• CNC-machined for tight tolerances and precise chain engagement
• Direct OEM replacement fitment — no modifications required
• Part of Vortex's trusted VTX sprocket lineup, designed for street and track use

The Vortex 839AV4-40 rear sprocket is an ideal upgrade for riders looking to fine-tune their drive ratio, reduce rotating mass, and improve throttle response. Compatible with standard motorcycle chain pitches and designed to match the corresponding front sprocket and chain combination for optimal drivetrain performance.