Stoptech 128.33127L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.33127L is engineered for Audi models including A4, A5, A6, A7, and Q5 variants. Designed to provide consistent braking performance, this rotor features a solid, cross-drilled surface and a coated hat finish to enhance durability and heat dissipation.

• Compatible with Audi A4, A4 allroad, A4 Quattro, A5, A5 Quattro, A5 Sportback, A6, A6 Quattro, A7 Quattro, allroad, and Q5
• Part number: 128.33127L
• Solid rotor design with cross-drilled surface for improved heat management
• Coated hat finish to resist corrosion
• Overall diameter: 300 mm (11.811 inches)
• Nominal thickness: 12.000 mm (0.472 inches), discard thickness: 10.000 mm (0.394 inches)
• Floating disc mounting with 5 lug holes (15.3 mm diameter)
• Weight approximately 12.2 lbs (5.55 kg)

About StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors line is designed to offer enhanced braking performance through improved heat dissipation and reduced brake fade. The cross-drilled surface pattern helps to evacuate gases and debris from the rotor surface, maintaining consistent pad contact. This rotor’s solid construction and coated hat finish provide durability and corrosion resistance, making it suitable for both street and light performance driving applications on compatible Audi models.

Technical Specifications and Features

This StopTech rotor features a 300 mm outside diameter and a nominal thickness of 12 mm, with a discard thickness of 10 mm to ensure safe replacement intervals. The rotor is solid rather than vented, which suits specific Audi applications requiring this design. The coated hat finish protects the rotor’s center section from rust and corrosion, extending service life. The rotor mounts using a floating disc system with a 112 mm bolt circle diameter and five lug holes sized at 15.3 mm, matching the factory specifications for the listed Audi models.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Audi A4, A5, A6, A7, and Q5 models
• Improves heat dissipation to reduce brake fade during spirited driving
• Addresses rotor surface cracking and glazing issues with cross-drilled design
• Prevents corrosion on rotor hats with coated finish
• Maintains proper braking performance on vehicles with floating disc mounting

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (10.000 mm) before installation
• Verify compatibility with specific Audi model and year using part number 128.33127L
• Use proper torque specifications for lug nuts and mounting bolts
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Clean rotor surface before installation to remove any protective coatings or debris

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The coated hat finish and precision machining ensure long-lasting performance and resistance to corrosion. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.