Vortex 920AZR-39 VTX Aluminum Rear Sprocket Pitch Sprockets - 920 39-Tooth Silver

The Vortex 920AZR-39 is a lightweight CAT5 aluminum rear sprocket designed for motorcycles running a 920 pitch chain. Featuring a 39-tooth count and a silver anodized finish, this sprocket delivers the precision engineering and performance Vortex Racing is known for on both street and track.

Key Features:

• Lightweight aluminum construction reduces rotating mass for improved acceleration and handling compared to OEM steel sprockets
• 100% CNC manufactured in the USA to exacting tolerances
• Specially formulated alloy developed to Vortex's proprietary specifications for optimal strength-to-weight ratio
• Silver anodized finish applied before cutting for a classic two-tone machined look while protecting against corrosion and oxidation
• Vortex patented CAT5 tooth design increases sprocket longevity and delivers consistent chain engagement
• 920 pitch — must be paired with a matching 920 pitch chain and front sprocket
• 39 teeth — direct replacement or gearing upgrade option

Vortex rear sprockets are a top choice for performance riders looking to reduce drivetrain weight without sacrificing durability. The 920AZR-39 is precision-machined at Vortex's facility in the United States and backed by the same engineering used on competitive racing machines.