Stoptech 126.45052SL Disc Brake Rotor - Rear Left

StopTech Sport Slotted Disc Brake Rotors Overview

The StopTech Sport Slotted Disc Brake Rotors (Part Number 126.45052SL) are engineered for Mazda RX-7 and Volkswagen EuroVan models requiring reliable braking performance. These vented, slotted rotors provide enhanced heat dissipation and consistent stopping power under demanding driving conditions.

• Compatible with Mazda RX-7 and Volkswagen EuroVan
• Part Number: 126.45052SL
• Vented disc design with straight vane style for improved cooling
• Slotted surface type to reduce brake fade and maintain pad bite
• Coated hat finish for corrosion resistance
• Floating disc mounting for better rotor alignment and performance
• Outside diameter: 11.575 inches (294 mm)
• Nominal thickness: 0.787 inches (20 mm); discard thickness: 0.709 inches (18 mm)
• Overall height: 1.772 inches (45 mm)
• 5 lug holes with 0.512 inch (13 mm) diameter and 4.5 inch (114.3 mm) bolt circle diameter

StopTech Sport Slotted Disc Brake Rotors Product Line

The StopTech Sport Slotted Disc Brake Rotors line focuses on delivering performance-oriented braking components designed for street and light track use. Featuring slotted surfaces and vented construction, these rotors help maintain consistent brake pad contact and reduce heat buildup. The coated hat finish enhances durability by protecting against rust and corrosion, making them suitable for Mazda RX-7 and Volkswagen EuroVan vehicles that demand reliable stopping power.

Technical Details and Specifications

This disc brake rotor features a vented design with straight vanes to optimize airflow and cooling during braking. The slotted surface helps evacuate gases and debris from the pad interface, improving braking consistency. The rotor’s floating disc mounting allows slight movement to reduce stress and improve alignment. With a coated hat finish, the rotor resists corrosion, extending service life. Key dimensions include an outside diameter of 11.575 inches (294 mm), nominal thickness of 0.787 inches (20 mm), and an overall height of 1.772 inches (45 mm). The rotor is designed with 5 lug holes on a 4.5 inch (114.3 mm) bolt circle diameter, compatible with the specified vehicle models.

Applications and Problem Solving

• Improves braking performance for Mazda RX-7 and Volkswagen EuroVan
• Reduces brake fade during aggressive driving or towing
• Minimizes rotor warping caused by heat buildup
• Enhances pad bite and reduces glazing with slotted surface
• Protects against corrosion with coated hat finish

Installation Notes and Tips

• Ensure compatibility with Mazda RX-7 or Volkswagen EuroVan before installation
• Check rotor thickness and discard limits (nominal thickness 0.787 inches, discard at 0.709 inches)
• Use proper torque specifications for 5 lug bolts on 4.5 inch bolt circle
• Inspect brake pads and hardware during rotor replacement
• Perform a bed-in procedure after installation for optimal braking performance

Quality Assurance and Warranty

StopTech Sport Slotted Disc Brake Rotors are manufactured to meet strict quality standards for durability and performance. The coated finish and vented design contribute to long service life under normal operating conditions. Warranty coverage details should be confirmed with the original equipment manufacturer or authorized distributor.