Stoptech 127.39025L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor (Part Number 127.39025L) is engineered for Volvo models including the S60, S80, V70, and XC70. Designed to enhance braking performance, this rotor features a solid construction with a coated hat finish for durability and corrosion resistance.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Solid rotor design with a coated hat finish to resist corrosion
• Nominal thickness of 0.472 inches (12.000 mm) with discard thickness at 0.394 inches (10.000 mm)
• Overall height of 2.551 inches (64.800 mm) and outside diameter of 11.339 inches (288.000 mm)
• Five stud/lug holes with a 4.252 inch (108.000 mm) bolt circle diameter
• Center hole diameter of 2.677 inches (68.000 mm) for precise fitment
• Weight approximately 12.26 lbs (5.57 kgs)

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 through improved heat management and pad bite. The cross-drilled holes and slots help reduce brake fade by allowing gases and debris to escape, while the solid rotor design offers consistent braking feel. The coated hat finish adds protection against rust, making these rotors suitable for daily driving and spirited use on compatible Volvo vehicles.

Detailed Product Description

This disc brake rotor is specifically engineered for Volvo S60, S80, V70, and XC70 models, ensuring precise fitment and reliable performance. The rotor’s cross-drilled and slotted surface improves cooling efficiency and helps maintain clean brake pads, which contributes to consistent stopping power. With a nominal thickness of 0.472 inches and a discard thickness of 0.394 inches, this rotor meets strict wear standards. The solid rotor design paired with a coated hat finish enhances durability and corrosion resistance, extending the rotor’s service life. The rotor’s dimensions, including an outside diameter of 11.339 inches and a center hole diameter of 2.677 inches, align with factory specifications for a direct replacement.

Common Applications and Problem Solving

• Reduces brake fade during extended or aggressive braking
• Improves brake pad bite and responsiveness
• Helps prevent rotor warping caused by excessive heat
• Minimizes brake dust accumulation on pads and rotors
• Provides corrosion resistance for longer rotor life

Installation Notes and Tips

Ensure compatibility with Volvo S60, S80, V70, and XC70 models before installation. Verify rotor thickness and discard limits during replacement to maintain optimal braking performance. The rotor does not include bearings or an ABS tone ring, so reuse existing components if applicable. Proper torque specifications should be followed for mounting bolts to avoid rotor distortion. It is recommended to replace brake pads simultaneously to ensure even wear and performance.

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The coated hat finish provides additional protection against corrosion, supporting long-term durability. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.