Stoptech 127.40042R Disc Brake Rotor - Rear Right

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.40042R) are engineered for Acura and Honda vehicles, including the Accord, Civic, Integra, and RSX models. Designed to enhance braking performance, these rotors feature a solid, coated hat finish and a floating disc mounting system for reliable operation.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Solid rotor design with a coated hat finish to resist corrosion
• Overall diameter of 10.224 inches (259.7 mm) and nominal thickness of 0.354 inches (9.0 mm)
• Floating disc mounting with 5 lug holes and 4 additional miscellaneous holes for secure fitment
• Compatible with ABS systems (ABS tone ring not included)

Detailed Product Specifications

This StopTech rotor features a solid disc design with a cross-drilled and slotted surface type, which helps reduce brake fade by improving heat dissipation and removing debris from the brake pad surface. The rotor has a nominal thickness of 0.354 inches (9.0 mm) and a discard thickness of 0.315 inches (8.0 mm), ensuring a long service life before replacement is necessary. The coated hat finish protects against rust and corrosion, maintaining rotor integrity over time.

The rotor’s overall height measures 1.902 inches (48.3 mm), with a center hole diameter of 2.528 inches (64.2 mm) and a mounting bolt hole circle diameter of 4.5 inches (114.3 mm). It includes 5 stud/lug holes with a diameter of 0.496 inches (12.6 mm), designed for precise fitment on compatible Acura and Honda models. Weighing approximately 8.5 lbs (3.86 kg), this rotor balances durability and performance.

About the StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to provide enhanced braking performance for street and light track use. Featuring cross-drilled holes and slots, these rotors improve cooling and help maintain consistent brake pad contact by removing gases and debris. The solid rotor construction with a coated hat finish offers corrosion resistance and durability, making them suitable for Acura and Honda vehicles requiring reliable stopping power.

Common Applications and Problem Solving

• Reduces brake fade during aggressive driving or heavy braking
• Improves brake pad bite and responsiveness
• Helps prevent glazing and uneven pad wear
• Minimizes rotor warping caused by heat buildup
• Provides corrosion resistance for extended rotor life

Installation Notes and Tips

• Ensure compatibility with Acura and Honda models including Accord, Civic, Integra, and RSX before installation
• Check rotor thickness and discard thickness to confirm replacement necessity
• Use proper torque specifications for mounting bolts to avoid rotor distortion
• Inspect brake pads and hardware during installation for optimal performance
• Perform a bed-in procedure after installation to maximize rotor and pad efficiency

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM specifications, ensuring consistent quality and performance. The coated hat finish provides additional protection against corrosion. While specific warranty details are not provided here, StopTech products typically come with a limited warranty covering defects in materials and workmanship. Refer to StopTech’s official documentation for complete warranty information.