Vortex 527ZRV4-40 Aluminum Rear Sprocket 525 Pitch 40T

The Vortex 527ZRV4-40 is a 40-tooth aluminum rear sprocket designed for 525-pitch chain drive systems. Vortex is a leading manufacturer of high-performance aftermarket sprockets trusted by both street and track riders worldwide for their precision machining and lightweight construction.

Key Features:

• Material: CNC-machined 7075 aluminum alloy for maximum strength-to-weight ratio
• Chain Pitch: 525 (5/8" × 5/16" pitch)
• Tooth Count: 40 teeth
• Finish: Anodized for corrosion resistance and durability
• Construction: Precision CNC machined to exacting tolerances for smooth, consistent chain engagement
• Weight Savings: Significantly lighter than OEM steel sprockets, reducing unsprung rotational mass
• Part Number: 527ZRV4-40

Vortex aluminum rear sprockets are engineered as a direct OEM replacement or performance upgrade, offering improved throttle response and acceleration due to reduced rotational inertia. The hard-anodized finish provides excellent wear resistance while keeping weight to a minimum — ideal for street performance and track day use.