Stoptech 127.45040L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor 127.45040L is engineered for reliable braking performance on Ford Escort, Mazda MX-3, Mercury Protege, and Tracer models. Designed to improve heat dissipation and reduce brake fade, this vented rotor features a coated hat finish for corrosion resistance.

• Cross-drilled and slotted surface for enhanced cooling and debris removal
• Vented rotor design with straight vane style to improve airflow
• Coated hat finish to resist rust and corrosion
• Floating disc mounting for better thermal expansion management
• Compatible with 4 stud/lug holes, 0.512 inch diameter
• Outside diameter of 10.118 inches (257 mm) and overall height of 1.772 inches (45 mm)
• Nominal thickness of 0.866 inches (22 mm) with discard thickness at 0.787 inches (20 mm)

Detailed Product Description

This StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor (part number 127.45040L) is designed specifically for select Ford, Mazda, and Mercury vehicles including the Escort, MX-3, Protege, and Tracer. The rotor’s vented construction with straight vanes promotes efficient heat dissipation during braking, reducing the risk of brake fade under demanding conditions. The cross-drilled and slotted surface pattern helps evacuate gases, dust, and water, maintaining consistent pad contact and improving overall braking response.

The rotor features a coated hat finish that protects against corrosion, extending the rotor’s service life. With a floating disc mounting design, it accommodates thermal expansion and contraction, minimizing warping and improving durability. The rotor measures 10.118 inches in outside diameter and 1.772 inches in overall height, with a nominal thickness of 0.866 inches and a discard thickness of 0.787 inches, ensuring compatibility with factory specifications.

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Product Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on performance-oriented rotors that combine cross-drilled holes and precision slots to enhance braking efficiency. This product line is engineered to provide improved heat dissipation and debris removal, which is critical for maintaining braking performance in both street and light track use. The rotors in this line are vented and coated to balance durability with performance, making them suitable for vehicles like the Ford Escort, Mazda MX-3, and Mercury Protege.

Common Applications and Problem Solving

• Reduces brake fade caused by excessive heat buildup
• Improves braking performance in wet or dusty conditions
• Minimizes rotor warping and uneven pad wear
• Enhances overall brake system cooling and longevity
• Prevents corrosion on rotor surfaces for extended service life

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.787 inches) before installation
• Verify compatibility with vehicle’s 4 lug/stud holes and 100 mm bolt circle diameter
• Use proper torque specifications for mounting bolts to avoid rotor distortion
• Inspect brake pads and calipers during installation for optimal performance
• Clean rotor surface with brake cleaner before installation to remove any protective coatings

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The 127.45040L rotor undergoes rigorous quality control to ensure consistent performance and durability. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.