GM AFX Power Front Disc Brake Conversion Kit 2" Drop Spindle Cross Drilled and Slotted Rotors with 9" Chrome Booster Cast Iron Chrome Top M/C Adjustable Proportioning Valve

Upgrade your braking system with this LEED Brakes power front drum-to-disc brake conversion kit, designed to deliver improved safety, reliability, and consistent stopping performance. This GM front disc brake upgrade replaces outdated factory drum brakes with modern single-piston disc brakes, providing stronger braking response, improved pedal feel, and greater control during everyday driving and spirited use.

This power front disc brake conversion kit includes everything required to mount single-piston disc brake calipers directly to the control arms of your vehicle. All components used in these GM front disc brake upgrade packages are brand-new, high-quality, precision-machined products engineered for proper fitment, durability, and long-term performance.

The system features 11-inch cast-iron front brake rotors with a cross-drilled and slotted design and zinc plating to help reduce brake fade and improve braking efficiency. Cross-drilled and slotted rotors allow gases that build up between the brake pad and rotor during heavy braking to escape more effectively. This improves pad-to-rotor contact, resulting in increased braking power and more consistent stopping performance—while also adding an aggressive, performance-focused appearance.

Matched single-piston cast-iron calipers provide dependable clamping force and feature a natural finish for a clean, factory-style look. To complete the system, this kit includes new front spindles, a master cylinder, and a power brake booster, ensuring proper hydraulic pressure and power assist for confident disc brake operation. Brake lines are not included, allowing flexibility for custom routing or replacement based on your specific vehicle setup.

Designed to work with a minimum recommended wheel size of 14x7, this LEED Brakes power front disc brake conversion kit is compatible with a wide range of factory and aftermarket wheel configurations, making it a versatile solution for classic and performance-oriented GM applications.

GM AFX Power Front Disc Brake Conversion Kit with 2″ Drop Spindles & 9″ Chrome Booster Specifications

• Position: Front

• Rotor Included: Yes

• Rotor Style: Cross Drilled and Slotted

• Rotor Construction: Cast Iron

• Rotor Diameter: 11 in

• Rotor Thickness: 1 in

• Caliper Included: Yes

• Caliper Piston Quantity: 1

• Caliper Material: Cast Iron

• Caliper Finish: Natural

• Minimum Recommended Wheel Diameter: 14x7

• Spindles Included: Yes

• Master Cylinder Included: Yes

• Brake Booster Included: Yes

• Brake Lines Included: No

• Quantity: Complete Kit

Built for drivers seeking a dependable GM power front disc brake conversion, this LEED Brakes kit delivers a proven combination of braking performance, durability, and visual appeal—ideal for street-driven classics, restorations, and performance-focused builds.

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