Stoptech 127.45074L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor 127.45074L is engineered for Mazda 6 vehicles requiring reliable braking performance. Designed with precision, this rotor combines cross-drilled holes and slotted surfaces to enhance heat dissipation and maintain consistent stopping power.

• Compatible with Mazda 6 models
• Part number: 127.45074L
• Cross-drilled and slotted surface for improved brake pad bite and heat management
• Solid rotor design with coated hat finish for corrosion resistance
• Overall diameter: 12.350 inches (313.7 mm)
• Nominal thickness: 0.433 inches (11.0 mm); discard thickness: 0.354 inches (9.0 mm)
• Floating disc mounting with 5 lug holes (0.512 inches diameter)
• Weight approximately 13.25 lbs (6.02 kg)

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to provide enhanced braking performance through improved heat dissipation and pad cleaning. The combination of cross-drilled holes and precision slots helps reduce brake fade and maintain consistent friction, making it suitable for street and light performance driving. This rotor line features a coated hat finish to resist corrosion and a solid rotor design optimized for durability and consistent wear.

Technical Specifications and Features

This StopTech rotor features a solid disc construction with a coated hat finish to protect against rust and corrosion. The rotor measures 12.350 inches (313.7 mm) in outside diameter and has a nominal thickness of 0.433 inches (11.0 mm), with a discard thickness of 0.354 inches (9.0 mm). The overall height is 1.614 inches (41.0 mm), and it includes a floating disc mounting system with a 5-lug hole pattern spaced on a 4.5-inch (114.3 mm) bolt circle diameter. The center hole diameter is 2.835 inches (72.0 mm), and the rotor weighs approximately 13.25 lbs (6.02 kg). This rotor does not include ABS tone rings or bearings.

Common Applications and Problem Solving

• Improves brake cooling to reduce fade during aggressive driving
• Helps maintain consistent braking performance under heavy use
• Reduces brake pad glazing and buildup with slotted surface
• Prevents rotor warping by enhancing heat dissipation
• Restores braking efficiency on Mazda 6 vehicles with worn or damaged rotors

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.354 inches) before installation
• Verify compatibility with Mazda 6 model year and brake system specifications
• Use proper torque specifications for the 5 lug nuts on the 4.5-inch bolt circle
• Inspect brake pads and replace if worn to optimize rotor performance
• Clean rotor surface before installation to remove any protective coatings or debris

Quality Assurance and Warranty

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet strict quality standards for durability and performance. The coated hat finish provides corrosion resistance to extend rotor life. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.