Stoptech 128.40040L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.40040L is engineered for Acura and Honda vehicles, including the Civic, CSX, ILX, and Prelude models. Designed to provide reliable braking performance, this rotor features a solid, cross-drilled surface and a coated hat finish for durability.

• Compatible with Acura Civic, CSX, ILX, and Honda Prelude
• Part number: 128.40040L
• Solid disc brake rotor with cross-drilled surface
• Coated hat finish for corrosion resistance
• Outside diameter: 10.236 inches (260 mm)
• Nominal thickness: 0.354 inches (9.000 mm)
• Discard thickness: 0.315 inches (8.000 mm)
• Overall height: 1.661 inches (42.200 mm)
• Center hole diameter: 2.524 inches (64.100 mm)
• Mounting bolt hole circle diameter: 4.500 inches (114.300 mm) with 5 lug holes
• Floating disc mounting with 2 miscellaneous holes
• Weight approximately 8 lbs (3.64 kgs)

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

The StopTech Sport Cross-Drilled Disc Brake Rotors line is designed to enhance braking performance through improved heat dissipation and reduced brake fade. The cross-drilled surface allows for better ventilation and water dispersion, which is beneficial for street-driven Acura and Honda vehicles like the Civic, CSX, ILX, and Prelude. This rotor’s solid design and coated hat finish contribute to long-term durability and resistance to corrosion.

Technical Description and Specifications

This StopTech rotor (part number 128.40040L) features a solid disc construction with a cross-drilled surface type, which helps maintain consistent braking performance under various driving conditions. The rotor’s nominal thickness is 0.354 inches (9.000 mm), with a discard thickness of 0.315 inches (8.000 mm), ensuring a clear service life indicator. The coated hat finish protects the rotor’s central mounting area from rust and corrosion, extending its usable life. The rotor measures 10.236 inches (260 mm) in outside diameter and has an overall height of 1.661 inches (42.200 mm). It mounts using a 5-lug pattern with a 4.500-inch (114.300 mm) bolt hole circle diameter and a center hole diameter of 2.524 inches (64.100 mm). This rotor does not include ABS tone rings or bearings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Acura Civic, CSX, ILX, and Honda Prelude
• Improves heat dissipation to reduce brake fade during spirited driving
• Addresses rotor corrosion issues with coated hat finish
• Restores braking performance affected by surface scoring or cracking
• Compatible upgrade for vehicles requiring solid, cross-drilled rotors

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.315 inches) before installation
• Clean mounting surfaces and check hub for rust or debris
• Use proper torque specifications for 5-lug mounting bolts
• Verify compatibility with vehicle ABS system as this rotor does not include an ABS tone ring
• Inspect brake pads for wear and replace if necessary during rotor installation

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 enhances corrosion resistance, contributing to the rotor’s longevity. While specific warranty details are not provided, 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.