Vortex 825ZKV4-43 VTX Aluminum Rear Sprocket Pitch Sprockets - 43T 520

The Vortex 825ZKV4-43 is a 43-tooth aluminum rear sprocket from Vortex's VTX series, designed for motorcycles running a 520 pitch chain. Vortex is a leading manufacturer of high-performance sprockets trusted by both competitive racers and street riders worldwide.

Machined from lightweight, high-strength aluminum alloy, this sprocket delivers a significant weight reduction over stock steel units without sacrificing durability. The precision CNC machining ensures consistent tooth profile and exact chain engagement for smooth, reliable power transfer.

Key Features:

• 43 teeth — optimized gearing for acceleration or top-speed tuning depending on application
• 520 pitch chain compatibility
• Lightweight aluminum construction — reduces unsprung and rotating mass
• Precision CNC machined for accurate tooth geometry and long service life
• Hard anodized finish for corrosion resistance and durability
• Direct bolt-on replacement using OEM sprocket carrier
• ZKV4 carrier bolt pattern

The Vortex VTX aluminum rear sprocket is an ideal upgrade for riders looking to fine-tune their bike's gearing ratio. Whether improving low-end pull on the street or optimizing lap times on the track, the 825ZKV4-43 offers a proven combination of performance, precision, and weight savings.