Vortex 825ZKV4-40 VTX Aluminum Rear Sprocket 40T

The Vortex 825ZKV4-40 is a high-performance aluminum rear sprocket from Vortex Racing's popular VTX series. Designed for motorcycles running an 825-pitch chain, this 40-tooth sprocket is precision-machined from lightweight aluminum alloy, making it an ideal upgrade for riders looking to reduce unsprung weight and improve throttle response.

Vortex sprockets are manufactured to exacting tolerances using CNC machining, ensuring consistent tooth geometry, smooth chain engagement, and extended service life. The VTX series is a go-to choice for both track-day enthusiasts and street riders who demand reliability and performance.

Key Features:

• 40 Teeth — suits a wide range of performance tuning and gearing setups
• 825-Pitch Chain Compatibility — engineered for precise fit with 825-series chains
• Lightweight Aluminum Construction — reduces unsprung and rotating mass for improved acceleration
• CNC-Machined Precision — tight tolerances for smooth, consistent chain engagement
• Hard-Anodized Finish — resists corrosion and wear for long-lasting performance
• Direct OEM-Style Fitment — bolt-on replacement with no modifications required

Whether upgrading from a stock steel sprocket or replacing a worn unit, the Vortex 825ZKV4-40 delivers a measurable weight savings and the confidence of a proven racing brand. Compatible with the specified V4 carrier/hub fitment — verify sprocket bolt pattern and carrier compatibility before installation.