Stoptech 128.40021L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.40021L is engineered for reliable braking performance on select Acura and Honda models. Designed to meet the demands of daily driving and spirited road use, this rotor offers enhanced heat dissipation and consistent stopping power.

• Cross-drilled surface for improved heat and gas dissipation
• Vented rotor design with straight vane style for efficient cooling
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better thermal expansion management
• Compatible with Acura and Honda models including Civic, Integra, Fit, and Insight
• Part number 128.40021L ensures precise fitment and quality

Detailed Product Features and Specifications

This StopTech Sport Cross-Drilled Disc Brake Rotor features a vented design with straight vanes that promote airflow and reduce brake fade during extended use. The cross-drilled surface pattern helps to dissipate heat and gases generated under heavy braking, maintaining consistent brake feel. The rotor has a coated hat finish that protects against rust and corrosion, preserving the rotor’s structural integrity over time.

Key dimensions include an outside diameter of 10.315 inches (262 mm), an overall height of 1.756 inches (44.6 mm), and a nominal thickness of 0.827 inches (21 mm). The rotor’s discard thickness is 0.748 inches (19 mm), indicating the minimum safe thickness before replacement is necessary. It features a floating disc mounting system with four mounting bolt holes arranged in a 100 mm (3.937 inch) bolt circle diameter, and four additional miscellaneous holes for weight reduction and heat management. The center hole diameter measures 2.524 inches (64.1 mm), and the rotor weighs approximately 12 lbs (5.45 kg).

StopTech Sport Cross-Drilled Disc Brake Rotors Product Line

The StopTech Sport Cross-Drilled Disc Brake Rotors line is designed to provide enhanced braking performance through improved heat dissipation and reduced brake fade. This product line focuses on cross-drilled rotors with vented designs and corrosion-resistant coatings, making them suitable for drivers seeking reliable stopping power and rotor longevity on vehicles such as the Acura Integra and Honda Civic.

Compatible Vehicles and Common Applications

• Acura Integra
• Honda Civic and Civic del Sol
• Honda City
• Honda EL
• Honda Fit
• Honda Insight

This rotor is ideal for addressing issues such as brake fade during aggressive driving, uneven rotor wear, and corrosion-related rotor degradation.

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Verify compatibility with vehicle make and model using part number 128.40021L
• Use proper torque specifications on mounting bolts to avoid warping
• Inspect brake pads and calipers for wear during rotor replacement
• Perform a bed-in procedure after installation for optimal braking performance

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet strict quality standards for durability and performance. The coated hat finish provides corrosion resistance to extend rotor life. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.