Vortex 921AKV4-40 VTX Aluminum Rear Sprocket 40T

The Vortex 921AKV4-40 is a high-quality aluminum rear sprocket from Vortex's VTX series, designed as a direct-fit performance upgrade for compatible motorcycles. Engineered for riders who demand lightweight performance without sacrificing durability, this sprocket is a popular choice for street and track applications alike.

Key Features:

• Tooth Count: 40 teeth for precise gear ratio tuning
• Material: CNC-machined 7075 aluminum alloy for an optimal strength-to-weight ratio
• Finish: Hard anodized surface treatment for corrosion resistance and extended wear life
• Design: VTX series featuring a lightening-hole pattern to reduce unsprung weight
• Fitment: Direct OEM-style replacement with precision-cut sprocket holes for secure chain engagement
• Color: Anodized finish (may vary by variant)

Vortex Racing is a trusted name in the powersports industry, known for producing precision-machined drivetrain components that meet the demands of both competitive racers and performance-oriented street riders. The 921AKV4-40 rear sprocket offers a reliable, drop-in upgrade over stock sprockets, helping reduce rotational mass and improve throttle response.