Stoptech 127.45072L 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 127.45072L) is engineered for Mazda RX-8 vehicles 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 brake pad cleaning
• Vented rotor design to reduce brake fade under heavy use
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with Mazda RX-8 models requiring 301mm diameter rotors
• Floating disc mounting with straight vane style for efficient airflow
• 5 lug holes with 114.3mm bolt circle diameter for precise fitment
• Nominal thickness of 18.2mm and discard thickness of 16.0mm for safe rotor replacement

Detailed Product Description

This StopTech rotor features a 301mm outside diameter and an overall height of 44.2mm, matching the exact specifications needed for Mazda RX-8 brake systems. The vented rotor design incorporates straight vanes that promote airflow to cool the rotor during aggressive driving or track use. The cross-drilled and slotted surface pattern helps to evacuate gases and debris from the brake pad interface, improving braking consistency and reducing the risk of brake fade. The coated hat finish protects the rotor hub from rust and corrosion, maintaining structural integrity over time.

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 and durable construction. This product line focuses on improving heat dissipation and pad bite by combining cross-drilled holes with precision-machined slots. These rotors are vented and coated to provide a balance of performance and longevity, making them suitable for both spirited street driving and occasional track use.

Common Applications and Problem Solving

• Reduces brake fade during high-performance or repeated braking
• Improves pad bite and braking response in wet or dusty conditions
• Minimizes rotor warping caused by excessive heat buildup
• Prevents corrosion on rotor hats for longer service life
• Maintains consistent braking performance for Mazda RX-8 vehicles

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness of 16.0mm before installation
• Use proper torque specifications for the 5 lug bolts on the 114.3mm bolt circle
• Check compatibility with existing brake pads and calipers on Mazda RX-8
• Clean rotor surface with brake cleaner before installation to remove any protective coatings
• Allow a proper bedding-in period after installation for optimal brake performance

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The 127.45072L rotor undergoes rigorous quality control to ensure durability and consistent performance. While specific warranty details may vary, StopTech products typically include coverage against manufacturing defects. Consult product documentation or manufacturer resources for exact warranty terms.