Stoptech 128.40046L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.40046L is engineered for Acura and Honda vehicles, including popular models like the Accord, CL, MDX, Odyssey, Pilot, TL, and TSX. Designed to enhance braking performance, this vented rotor features a cross-drilled surface for improved heat dissipation and consistent stopping power.

• Cross-drilled surface for enhanced cooling and brake fade reduction
• Vented rotor design with straight vane style for efficient heat dissipation
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for improved rotor alignment and performance
• Compatible with 5-lug wheel setups, center hole diameter of 64.1 mm
• Nominal thickness of 28.0 mm and discard thickness of 26.0 mm for durability
• Outside diameter of 300 mm (11.811 inches) suitable for specified Acura and Honda models

About StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors line is designed to provide reliable braking performance under demanding conditions. The cross-drilled surface pattern helps to dissipate heat and gases generated during braking, reducing the risk of brake fade. These rotors feature a vented design with straight vanes to maintain optimal operating temperatures. The coated hat finish offers protection against rust and corrosion, making them suitable for daily driving and spirited use on Acura and Honda vehicles.

Detailed Product Description

This StopTech rotor, part number 128.40046L, is a vented disc brake rotor with a cross-drilled surface type that improves airflow and cooling efficiency. The rotor measures 300 mm in outside diameter and has a nominal thickness of 28.0 mm, with a discard thickness of 26.0 mm to ensure safe replacement intervals. The overall height is 47.2 mm, and the rotor features a floating disc mounting system to allow slight movement, reducing stress and improving brake feel. It is designed for vehicles with a 5-lug wheel pattern and a mounting bolt hole circle diameter of 114.3 mm. The rotor does not include ABS tone rings or bearings, so it is compatible with factory components on Acura and Honda models such as the Accord, MDX, and Pilot.

Common Applications and Problem Solving

• Reduces brake fade during extended or aggressive braking
• Improves heat dissipation to prevent rotor warping
• Enhances braking consistency in Acura and Honda vehicles
• Addresses corrosion issues with coated hat finish
• Compatible replacement for worn or damaged rotors on specified models

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (26.0 mm) before installation
• Use proper torque specifications for mounting bolts on 5-lug pattern
• Check compatibility with existing brake pads and calipers
• Inspect hub surface for cleanliness to ensure proper rotor seating
• Bleed brake system after installation to maintain optimal brake performance

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet or exceed OEM specifications 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. Always consult the product documentation or manufacturer for exact warranty terms.