Stoptech 128.35092R Disc Brake Rotor - Rear Right

Overview of StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors (Part Number 128.35092R) are engineered for Mercedes-Benz models including G55 AMG, GL320, GL350, GL450, GL550, ML320, ML350, ML450, ML500, ML550, R320, R350, and R500. These rotors provide reliable braking performance with a vented, cross-drilled design to enhance heat dissipation and maintain consistent stopping power.

• Cross-drilled surface for improved heat dissipation and reduced brake fade
• Vented rotor design to optimize cooling during heavy braking
• Coated hat finish to resist corrosion and extend rotor life
• Nominal thickness of 0.866 inches (22.000 mm) with discard thickness at 0.764 inches (19.400 mm)
• Outside diameter of 12.992 inches (330.000 mm) for precise fitment
• Five lug holes with a 4.409 inch (112.000 mm) bolt circle diameter
• Compatible with floating/dih disc mounting and includes one miscellaneous hole
• Weight approximately 17.89 lbs (8.13 kgs) per rotor

Product Line Details: StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors line is designed to meet the demands of performance-oriented driving while maintaining OEM-level fitment and reliability. The cross-drilled surface pattern helps to dissipate heat more efficiently, reducing the risk of brake fade during aggressive braking. The vented rotor construction further enhances cooling by allowing airflow between the rotor faces. This combination is particularly beneficial for Mercedes-Benz SUVs and performance models such as the G55 AMG and ML series, where braking demands can be higher due to vehicle weight and power.

Technical Specifications and Features

These rotors feature a nominal thickness of 0.866 inches (22.000 mm) and a discard thickness of 0.764 inches (19.400 mm), ensuring a long service life before replacement is necessary. The overall height measures 2.469 inches (62.700 mm), and the outside diameter is 12.992 inches (330.000 mm), matching factory specifications for proper fitment. The hat finish is coated to resist corrosion, which helps maintain rotor integrity over time. The rotor includes five lug holes with a 0.602 inch (15.300 mm) diameter and a 4.409 inch (112.000 mm) bolt circle diameter, compatible with the specified Mercedes-Benz models. The rotor is vented with straight vanes to optimize airflow and cooling.

Applications and Problem Solving

• Reduces brake fade during high-performance or heavy-duty driving
• Improves heat dissipation to prevent rotor warping
• Maintains consistent braking performance under demanding conditions
• Resists corrosion with coated hat finish for longer rotor life
• Ensures proper fitment and compatibility with Mercedes-Benz G55 AMG, GL, ML, and R-Class models

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness
• Ensure proper torque on lug nuts to manufacturer specifications for safety and performance
• Inspect brake pads and replace if worn to maximize rotor lifespan
• Clean rotor surface before installation to remove any protective coatings or debris
• Compatible with vehicles that do not require ABS tone rings as this rotor does not include one

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. Each rotor undergoes rigorous quality control to ensure durability and performance. 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.