Stoptech 127.45070L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.45070L) are engineered for Mazda RX-8 vehicles requiring reliable braking performance. These vented rotors feature a slotted and cross-drilled surface designed to improve heat dissipation and maintain consistent stopping power under demanding conditions.

• Compatible with Mazda RX-8 models
• Part Number: 127.45070L
• Vented disc brake rotor with cross-drilled and slotted surface
• Coated hat finish for corrosion resistance
• Floating disc mounting design with straight vane style
• Overall diameter: 11.929 inches (303 mm)
• Nominal thickness: 0.945 inches (24 mm)
• Discard thickness: 0.866 inches (22 mm)
• 5 lug holes with 4.5 inch (114.3 mm) bolt circle diameter
• Weight approximately 16.5 lbs (7.5 kgs)

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to enhance braking efficiency by combining cross-drilled holes and precision slots. This design helps to evacuate gases, dust, and water from the rotor surface, reducing brake fade and improving pedal feel. The vented rotor construction with straight vanes promotes effective heat dissipation, which is critical for maintaining performance during spirited driving or track use. The coated hat finish provides additional protection against corrosion, extending rotor life.

Technical Specifications and Features

This disc brake rotor features a floating mounting design that allows for slight movement to reduce stress and improve rotor longevity. The rotor’s overall height is 1.772 inches (45 mm), with a center hole diameter of 2.835 inches (72 mm). It includes three miscellaneous holes and is designed for vehicles with a 5-lug wheel pattern, each lug hole measuring 0.512 inches (13 mm) in diameter. The rotor does not include ABS tone rings or bearings.

Applications and Problem Solving

• Improves braking performance for Mazda RX-8 vehicles
• Reduces brake fade during aggressive driving or track conditions
• Helps prevent rotor warping caused by excessive heat buildup
• Minimizes brake dust accumulation on rotor surface
• Enhances wet weather braking by evacuating water from the rotor surface

Installation Notes and Tips

• Ensure compatibility with Mazda RX-8 before installation
• Inspect hub and mounting surfaces for cleanliness and damage
• Torque lug nuts to manufacturer specifications to avoid rotor distortion
• Check rotor thickness and discard limits before installation
• Brake pads should be compatible with slotted and drilled rotors for optimal performance

Quality Assurance and Warranty

StopTech rotors are manufactured to meet or exceed OEM specifications, ensuring consistent quality 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 a limited warranty against defects in materials and workmanship. Refer to StopTech or authorized distributors for exact warranty terms.