Raybestos 681938 Disc Brake Rotor - Rear

Overview of Raybestos 681938 Disc Brake Rotor

The Raybestos Specialty - Street Performance; Coated Rotor 681938 is engineered for Ford Mustang models requiring reliable braking performance. This solid, smooth-surfaced disc brake rotor offers precise fitment and consistent stopping power for street-driven vehicles.

• Compatible with Ford Mustang models
• Solid disc brake rotor with smooth surface finish
• Nominal thickness of 0.445 inches (11.3 mm) and discard thickness of 0.390 inches (9.9 mm)
• Outside diameter measures 12.598 inches (320 mm)
• Five mounting bolt holes with a 4.5-inch (114.3 mm) bolt circle diameter
• Center hole diameter of 2.795 inches (71 mm)
• Overall height of 1.634 inches (41.5 mm)

Raybestos Specialty - Street Performance; Coated Rotor Line

The Specialty - Street Performance; Coated Rotor line by Raybestos is designed to provide street drivers with dependable braking components that balance performance and durability. The coating helps resist corrosion, extending rotor life and maintaining consistent braking characteristics. This product line is tailored for vehicles like the Ford Mustang that demand reliable stopping power under everyday driving conditions.

Detailed Product Description

This Raybestos disc brake rotor (part number 681938) is a conventional solid rotor designed specifically for Ford Mustang applications. The rotor features a smooth surface type that ensures even pad contact and consistent braking performance. With a nominal thickness of 0.445 inches and a discard thickness of 0.390 inches, it provides a clear service life indicator to maintain safety standards. The rotor’s outside diameter of 12.598 inches and overall height of 1.634 inches are engineered to match factory specifications, ensuring proper fitment and function. The five mounting bolt holes with a 4.5-inch bolt circle diameter and 0.622-inch hole diameter align precisely with Mustang hubs, facilitating straightforward installation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Ford Mustang models
• Addresses brake pulsation caused by uneven rotor surfaces
• Resolves reduced braking efficiency due to rotor thickness below discard limits
• Prevents corrosion-related rotor degradation with coated surface
• Improves brake pad contact consistency for smoother stops

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness
• Clean mounting surfaces to prevent rotor runout and vibration
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to optimize rotor performance
• Follow proper bedding procedures after installation for best braking results

Quality Assurance and Warranty

Raybestos rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The Specialty - Street Performance; Coated Rotor line undergoes rigorous quality control to ensure durability and consistent braking performance. While specific warranty details may vary, Raybestos typically offers coverage against defects in materials and workmanship. Consult product documentation or authorized sources for exact warranty terms.