Stoptech 126.45066SL Disc Brake Rotor - Rear Left

StopTech Sport Slotted Disc Brake Rotors Overview

The StopTech Sport Slotted Disc Brake Rotors (Part Number 126.45066SL) are engineered for Mazda 3 and Mazda 3 Sport models. These solid, slotted rotors provide consistent braking performance with enhanced heat dissipation and improved pad bite.

• Compatible with Mazda 3 and Mazda 3 Sport
• Part Number: 126.45066SL
• Solid rotor design with slotted surface
• Coated hat finish for corrosion resistance
• Outside diameter: 10.433 inches (265 mm)
• Nominal thickness: 0.433 inches (11.000 mm)
• Discard thickness: 0.354 inches (9.000 mm)
• Overall height: 1.614 inches (41.000 mm)
• Floating disc mounting design
• 5 lug holes with 4.5 inch (114.3 mm) bolt circle diameter

Product Line Details: StopTech Sport Slotted Disc Brake Rotors

The StopTech Sport Slotted Disc Brake Rotors line is designed to offer improved braking performance for street and light track use. Featuring a slotted surface, these rotors help maintain pad cleanliness and reduce gas buildup during braking. The solid rotor construction provides durability and consistent wear characteristics, while the coated hat finish protects against corrosion. This product line balances performance and longevity for Mazda 3 vehicles requiring reliable braking upgrades.

Technical Specifications and Features

This rotor features a solid design with a slotted surface type to enhance brake pad contact and heat dissipation. The coated hat finish helps resist rust and corrosion, extending rotor life. The rotor measures 10.433 inches (265 mm) in outside diameter with a nominal thickness of 0.433 inches (11.000 mm) and a discard thickness of 0.354 inches (9.000 mm). The overall height is 1.614 inches (41.000 mm), and it includes a floating disc mounting system for improved thermal expansion management. The rotor has a center hole diameter of 2.827 inches (71.8 mm) and fits 5 lug holes with a 4.5 inch (114.3 mm) bolt circle diameter, matching Mazda 3 specifications.

Applications and Problem Solving

• Replacement for worn or warped rotors on Mazda 3 and Mazda 3 Sport
• Improves brake pad bite and reduces brake fade under heavy use
• Helps prevent glazing and uneven pad wear with slotted surface
• Reduces corrosion-related rotor damage with coated hat finish
• Maintains consistent braking performance during spirited driving

Installation Notes and Tips

Ensure compatibility with Mazda 3 or Mazda 3 Sport models before installation. Verify rotor thickness and discard limits to maintain safe braking performance. The floating disc mounting design requires proper torque specifications on mounting bolts to allow for thermal expansion. No bearings or ABS tone ring are included with this rotor. Professional installation is recommended to ensure proper fit and function.

Quality Assurance and Warranty

StopTech Sport Slotted Disc Brake Rotors are manufactured to meet OEM specifications for fit and performance. The coated hat finish provides corrosion resistance to extend rotor life. While specific warranty details are not provided, StopTech products typically adhere to industry standards for quality and durability. Always consult product documentation or manufacturer resources for warranty information.