PBR Ultra-Light Aluminium Hard Anodized 4640 - 520 SprocketRef : PBR00235A / 1075375010

PBR Ultra-Light Hard Anodized Aluminum Sprocket 4640 - 520 (43 Teeth)

Designed for riders who pay attention to every detail of their drivetrain, this PBR monobloc sprocket combines lightness and durability. Machined from aluminum and treated with hard anodization, it offers an aesthetic stainless steel finish while minimizing wear due to corrosion and abrasion. Its Ultra-Light design reduces unsprung mass without sacrificing the strength needed for road and sport use.

• Tooth diameter: 43 teeth — suitable for 520 pitch transmissions
• Material: hard anodized aluminum — stainless steel finish
• Type: monobloc for consistent chain retention
• Manufacturing: strict processes and high-quality raw materials
• Practical advantages: reduced friction and excellent wear resistance

Ideal for roadsters and custom builds where optimizing drivetrain behavior (acceleration responsiveness, rear wheel inertia) is sought, this sprocket is often among the choices of riders and builders. A useful reference for those replacing a 520 sprocket with 43 teeth.

Manufacturer reference: 4640 43 LD