Stoptech 127.45022L 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 127.45022L) are engineered for Mazda RX-7 models requiring reliable and consistent braking performance. These vented rotors feature a slotted and drilled surface designed to improve heat dissipation and maintain braking efficiency under demanding conditions.

• Cross-drilled and slotted rotor surface for enhanced cooling and debris removal
• Vented rotor design with straight vanes to reduce heat buildup
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for improved rotor alignment and performance
• Compatible with Mazda RX-7 models requiring 5-lug, 114.3mm bolt circle rotors

Detailed Product Features and Specifications

This StopTech rotor has an outside diameter of 275.7 mm (10.854 inches) and an overall height of 65 mm (2.559 inches), matching the precise fitment requirements for the Mazda RX-7. The nominal thickness is 22 mm (0.866 inches) with a discard thickness of 20 mm (0.787 inches), ensuring safe replacement intervals. The rotor includes two miscellaneous holes and a center hole diameter of 77 mm (3.031 inches). It is designed with five stud/lug holes, each 12.5 mm (0.492 inches) in diameter, arranged on a 114.3 mm (4.5 inches) bolt circle diameter. The rotor weighs approximately 6.59 kg (14.5 lbs), balancing durability and weight for optimal braking response.

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 improve brake pad bite and heat dissipation. This product line is designed to reduce brake fade and maintain consistent braking performance during spirited driving or track use. The vented rotor design with straight vanes further enhances cooling efficiency, making it suitable for Mazda RX-7 owners seeking a balance between street and performance braking needs.

Common Applications and Problem Solving

• Reduces brake fade during aggressive driving or track sessions
• Improves wet weather braking by channeling water away from the rotor surface
• Minimizes brake dust buildup for cleaner rotor and pad contact
• Prevents rotor warping caused by excessive heat
• Restores braking performance on Mazda RX-7 models with worn or damaged rotors

Installation Notes and Tips

• Ensure compatibility with Mazda RX-7 5-lug, 114.3 mm bolt circle specifications
• Inspect brake pads and replace if worn to optimize rotor performance
• Torque lug nuts to manufacturer specifications to avoid rotor distortion
• Check for ABS sensor clearance as this rotor does not include an ABS tone ring
• Follow proper bedding-in procedures for new rotors and pads to maximize braking efficiency

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM standards 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. It is recommended to consult the product documentation or manufacturer for exact warranty terms.