Stoptech 127.39053R 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 127.39053R) are engineered for enhanced braking performance on Volvo models including the C40, C40 Recharge, XC40, XC40 Recharge, and XC90. These rotors feature a vented design with cross-drilled and slotted surfaces to improve heat dissipation and maintain consistent stopping power under demanding conditions.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Vented rotor design with 40 OEM-style vanes for efficient 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, center hole diameter 63.5 mm
• Nominal thickness of 20.0 mm and discard thickness of 17.5 mm
• Outside diameter of 340 mm (13.386 inches) and overall height of 43.1 mm (1.697 inches)

Detailed Product Description

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are designed specifically for select Volvo vehicles, including the C40 and XC90 series. These rotors incorporate a vented design with 40 OEM vane count to optimize airflow and cooling during braking. The cross-drilled and slotted surface pattern helps to reduce brake fade by allowing gases and debris to escape, while also improving pad bite and wet weather performance. The coated hat finish provides corrosion resistance, helping maintain rotor integrity over time. With a floating disc mounting system, these rotors accommodate thermal expansion, reducing the risk of warping under high-stress conditions. The rotor’s dimensions, including a 340 mm outside diameter and 20 mm nominal thickness, ensure proper fitment and durability for the specified Volvo models.

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Product Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on delivering enhanced braking performance through advanced rotor surface designs. This product line combines cross-drilled holes and precision slots to improve heat dissipation and pad cleaning, which is critical for maintaining consistent braking under aggressive driving or heavy load conditions. The vented rotor construction further supports thermal management, making these rotors suitable for both street and light track use on compatible vehicles like the Volvo C40 and XC90.

Common Applications and Problem Solving

• Reduces brake fade during extended or aggressive braking
• Improves braking performance in wet or debris-prone environments
• Minimizes rotor warping caused by thermal stress
• Enhances pad bite and overall stopping power
• Prevents corrosion on the rotor hat for longer service life

Installation Notes and Tips

• Ensure compatibility with Volvo C40, C40 Recharge, XC40, XC40 Recharge, and XC90 models before installation
• Check rotor discard thickness (17.5 mm) and replace if below this limit
• Use proper torque specifications for the 5-lug mounting pattern with 15.6 mm stud diameter
• Inspect brake pads and calipers during rotor replacement for optimal performance
• Allow for proper bedding-in of new rotors and pads to achieve consistent braking

Quality Assurance and Warranty

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The rotors undergo rigorous quality control to ensure durability and performance. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. It is recommended to consult the product documentation or manufacturer for exact warranty terms.