Stoptech 127.35089R Disc Brake Rotor - Front Right

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.35089R) are engineered for Mercedes-Benz models including GL320, GL450, GL550, ML320, ML350, ML450, ML500, ML550, R320, R350, and R500. These rotors provide reliable braking performance with enhanced heat dissipation and improved pad bite.

• Cross-drilled and slotted surface for efficient heat dissipation and debris removal
• Vented rotor design to reduce brake fade under heavy use
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for improved rotor alignment and reduced stress
• Compatible with 5-lug wheel configurations and specific bolt circle diameter

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are part of StopTech's performance-oriented product line designed to enhance braking efficiency and durability. Featuring a vented rotor design combined with cross-drilled holes and precision slots, this line improves cooling and helps maintain consistent braking performance. The coated hat finish adds corrosion resistance, making these rotors suitable for both daily driving and spirited use on Mercedes-Benz SUVs and crossovers.

Technical Specifications and Features

This disc brake rotor has a nominal thickness of 1.256 inches (31.9 mm) and a discard thickness of 1.157 inches (29.4 mm), ensuring a long service life before replacement is necessary. The rotor's outside diameter measures 12.992 inches (330 mm), with an overall height of 2.138 inches (54.3 mm). It features a floating disc mounting system and straight vane style for effective heat dissipation. The rotor includes three miscellaneous holes and a 5-lug stud pattern with a bolt circle diameter of 4.409 inches (112 mm). The center hole diameter is 2.638 inches (67 mm), and the rotor weighs approximately 26.5 lbs (12.05 kg). Note that this rotor does not include ABS tone rings or bearings.

Applications and Problem Solving

• Improves braking performance on Mercedes-Benz GL and ML series SUVs and R-Class models
• Reduces brake fade during extended or aggressive driving conditions
• Helps prevent rotor warping caused by excessive heat buildup
• Minimizes brake dust and debris accumulation on rotor surface
• Enhances pad bite and overall stopping power with slotted and drilled design

Installation Notes and Tips

• Ensure compatibility with your specific Mercedes-Benz model and verify lug pattern and rotor dimensions
• Inspect brake pads and calipers for wear before installation
• Follow manufacturer torque specifications for mounting bolts
• Check rotor thickness and discard limits regularly to maintain safety
• Professional installation is recommended for optimal performance and safety

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The coated hat finish provides corrosion resistance to extend rotor life. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or StopTech directly for warranty terms related to part number 127.35089R.