Stoptech 127.45052L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor (Part Number 127.45052L) is engineered for Mazda RX-7 and Volkswagen EuroVan models requiring reliable braking performance. Designed with vented construction and a coated hat finish, this rotor balances heat dissipation and corrosion resistance for consistent stopping power.

• Cross-drilled and slotted surface for improved heat dissipation and debris removal
• Vented rotor design to reduce brake fade under heavy use
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with Mazda RX-7 and Volkswagen EuroVan vehicles
• Floating disc mounting and straight vane style for efficient cooling
• Nominal thickness of 0.787 inches (20.000 mm) with discard thickness at 0.709 inches (18.000 mm)
• Outside diameter of 11.575 inches (294.000 mm) and overall height of 1.772 inches (45.000 mm)
• Five lug holes with a 4.5 inch (114.3 mm) bolt circle diameter

About the StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to enhance braking performance through advanced rotor surface technology. The combination of cross-drilled holes and precision slots improves pad bite and helps evacuate gases, dust, and water from the rotor surface. This product line is ideal for drivers seeking improved brake response and heat management without compromising rotor durability. The vented rotor design and coated hat finish further contribute to consistent braking performance and corrosion resistance.

Product Details and Specifications

This disc brake rotor features a vented design with straight vanes to optimize airflow and cooling during braking. The rotor’s nominal thickness is 0.787 inches (20.000 mm), with a discard thickness of 0.709 inches (18.000 mm), ensuring safe replacement intervals. The rotor measures 11.575 inches (294.000 mm) in outside diameter and has an overall height of 1.772 inches (45.000 mm). It includes five lug holes with a 0.512 inch (13.000 mm) diameter and a mounting bolt hole circle diameter of 4.5 inches (114.3 mm). The center hole diameter is 2.835 inches (72.000 mm). This rotor does not include ABS tone rings or bearings and uses a floating disc mounting system.

Applications and Problem Solving

• Reduces brake fade during aggressive driving or towing
• Improves heat dissipation to prevent rotor warping
• Enhances braking performance in wet or dusty conditions
• Minimizes brake dust buildup on rotor surface
• Provides consistent pedal feel and stopping power for Mazda RX-7 and Volkswagen EuroVan

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean rotor surface to remove any protective coatings before mounting
• Check compatibility with vehicle lug pattern and bolt circle diameter
• Torque lug nuts to manufacturer specifications to avoid rotor damage
• Inspect brake pads and calipers during rotor replacement for optimal performance

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. 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. Always refer to the manufacturer’s warranty documentation for complete coverage information.