Stoptech 127.33138R Disc Brake Rotor - Front Right

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.33138R) are engineered for enhanced braking performance on select Audi and Porsche models. Designed to improve heat dissipation and reduce brake fade, these rotors are a reliable upgrade for vehicles like the Audi A5, A6 Quattro, and Porsche Macan.

• Cross-drilled and slotted surface for improved cooling and debris removal
• Vented rotor design with pillar-style vanes for efficient heat dissipation
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better thermal expansion management
• Compatible with 5-lug wheel configurations and specific bolt patterns

Detailed Product Features and Specifications

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors feature a vented design with pillar-style vanes that promote airflow and reduce heat buildup during aggressive braking. The rotor surface combines cross-drilled holes and precision-machined slots to help evacuate gases, dust, and water, maintaining consistent pad contact and braking efficiency. The coated hat finish protects against rust and corrosion, ensuring durability over time.

Key dimensions include an outside diameter of 345 mm (13.583 inches), an overall height of 52.1 mm (2.051 inches), and a nominal thickness of 30 mm (1.181 inches). The rotor is designed with a floating disc mounting system and a center hole diameter of 68 mm (2.677 inches), fitting vehicles with a 5-lug, 112 mm bolt circle diameter. The rotor weighs approximately 11.56 kg (25.5 lbs), balancing strength and weight for optimal performance.

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 technology. This product line combines cross-drilled holes and slotted grooves to improve pad bite and heat dissipation, making it suitable for sporty driving and demanding conditions. The rotors are vented with pillar-style vanes to maintain cooler operating temperatures, which helps reduce brake fade and extends component life.

Compatible Vehicles and Applications

This rotor is compatible with a range of Audi and Porsche models, including:

• Audi A5 and S5
• Audi A6 and A6 Quattro
• Audi A7 Quattro
• Audi Q5
• Porsche Macan

It is designed to meet the specific braking requirements of these vehicles, providing reliable stopping power and improved thermal management.

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup during spirited driving
• Uneven pad wear due to inconsistent rotor surface contact
• Corrosion and rust on rotor hats reducing lifespan
• Reduced braking performance in wet conditions due to water accumulation
• Vibration or noise from warped or worn rotors

Installation Notes and Tips

• Ensure compatibility with your vehicle’s make, model, and year before installation
• Inspect brake pads and replace if worn to maximize rotor performance
• Follow manufacturer torque specifications for mounting bolts
• Check for proper rotor runout to avoid vibration issues
• Bleed brake system after installation to maintain optimal brake feel

Quality Assurance and Warranty

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet strict quality standards, ensuring consistent performance and durability. 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.