Stoptech 128.33107CL Disc Brake Rotor - Front Left

StopTech Sport Cryo-Treated Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cryo-Treated Cross-Drilled Disc Brake Rotors (Part Number 128.33107CL) are engineered for Audi A4, A4 Quattro, A6, A6 Quattro, A8, and A8 Quattro models. These rotors provide reliable braking performance with enhanced heat dissipation and durability for daily driving and spirited use.

• Cross-drilled surface for improved heat dissipation and reduced brake fade
• Cryo-treated to relieve internal stresses and increase rotor lifespan
• Vented rotor design with straight vane style for efficient cooling
• Coated vented hat finish to resist corrosion and maintain appearance
• Floating disc mounting with 5 lug holes and 112 mm bolt circle diameter
• Nominal thickness of 24.9 mm and discard thickness of 23.0 mm for safe service limits
• Outside diameter of 312 mm and overall height of 46.3 mm

Product Line Details: StopTech Sport Cryo-Treated Cross-Drilled Rotors

The StopTech Sport Cryo-Treated Cross-Drilled Disc Brake Rotors are part of StopTech's Sport line, designed to enhance braking performance through advanced manufacturing processes. Cryogenic treatment reduces residual stresses in the rotor material, improving durability and resistance to cracking. The cross-drilled surface pattern aids in heat dissipation and gas evacuation, which helps maintain consistent braking under demanding conditions. This rotor line is suited for Audi models requiring vented, floating rotors with precise fitment and reliable performance.

Technical Specifications and Features

These rotors feature a vented design with straight vanes to optimize airflow and cooling during braking. The coated vented hat finish protects against corrosion, extending rotor life. The floating disc mounting system allows for slight rotor movement, reducing stress and improving pad contact. With a center hole diameter of 68 mm and stud/lug hole diameter of 15.5 mm, these rotors are engineered to exact OEM specifications for Audi A4, A6, and A8 series vehicles. The part number 128.33107CL ensures compatibility and quality assurance.

Applications and Problem Solving

• Reduces brake fade during extended or aggressive braking
• Improves heat dissipation to prevent rotor warping
• Minimizes cracking risk through cryogenic treatment
• Resists corrosion with coated vented hat finish
• Ensures consistent braking performance on Audi A4, A6, and A8 models

Installation Notes and Tips

• Verify rotor thickness before installation; discard thickness is 23.0 mm
• Ensure proper alignment with 5 lug holes and 112 mm bolt circle diameter
• Check compatibility with ABS sensors as these rotors do not include tone rings
• Use recommended torque specifications for mounting bolts
• Inspect brake pads and calipers during rotor replacement for optimal performance

Quality Assurance and Warranty

StopTech Sport Cryo-Treated Cross-Drilled Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The cryogenic treatment process enhances rotor durability and resistance to cracking. 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.