Stoptech 128.40056R Disc Brake Rotor - Front Right

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.40056R is engineered for Acura and Honda vehicles, including the Civic, CR-Z, and RSX models. Designed to enhance braking performance, this vented rotor features a cross-drilled surface for improved heat dissipation and consistent stopping power.

• Cross-drilled surface type for efficient heat and gas dissipation
• Vented rotor design with straight vane style for optimal cooling
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better thermal expansion management
• Compatible with 5-lug wheel setups with 114.3 mm bolt circle diameter
• Nominal thickness of 0.827 inches (21.000 mm) with discard thickness at 0.748 inches (19.000 mm)
• Outside diameter of 10.295 inches (261.500 mm) and overall height of 1.850 inches (47.000 mm)
• Center hole diameter of 2.528 inches (64.200 mm) and hat ID of 5.512 inches (140.000 mm)
• Weight approximately 11.5 lbs (5.22 kgs)

About StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors line is designed to provide enhanced braking performance through improved heat management and durability. The cross-drilled pattern helps reduce brake fade by allowing gases and heat to escape more efficiently during aggressive driving. The vented rotor design with straight vanes further aids in cooling, making these rotors suitable for street and light track use. The coated hat finish offers corrosion resistance, maintaining rotor integrity over time.

Detailed Product Description

This StopTech rotor, part number 128.40056R, is a vented disc brake rotor featuring a cross-drilled surface to improve thermal performance and reduce brake fade. The floating disc mounting design accommodates thermal expansion, reducing the risk of warping under heavy braking conditions. With a nominal thickness of 0.827 inches and a discard thickness of 0.748 inches, this rotor maintains structural integrity throughout its service life. The coated hat finish protects against rust and corrosion, which is especially beneficial for Acura and Honda Civic, CR-Z, and RSX models that encounter varied driving environments.

Common Applications and Problem Solving

• Reduces brake fade during spirited driving or track use
• Improves heat dissipation to prevent rotor warping
• Minimizes corrosion on the rotor hat for longer service life
• Enhances braking consistency for Acura and Honda Civic, CR-Z, and RSX vehicles
• Addresses uneven brake pad wear caused by overheating

Installation Notes and Tips

• Ensure compatibility with your vehicle’s 5-lug wheel setup and 114.3 mm bolt circle diameter
• Check rotor thickness before installation; replace if below discard thickness of 0.748 inches
• Clean rotor surface before installation to remove any protective coatings or residues
• Torque lug nuts to manufacturer specifications to avoid rotor distortion
• Inspect brake pads and calipers during installation for optimal 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 finish and vented design contribute to durability and consistent braking performance. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always refer to the manufacturer’s warranty documentation for complete terms.