Stoptech 126.45051SR Disc Brake Rotor - Front Right

StopTech Sport Slotted Disc Brake Rotors for Mazda RX-7

The StopTech Sport Slotted Disc Brake Rotor 126.45051SR is engineered for Mazda RX-7 owners seeking reliable braking performance with enhanced heat dissipation. Designed with precision, this vented and slotted rotor supports consistent stopping power under demanding conditions.

• Compatible with Mazda RX-7 models
• Part number: 126.45051SR
• Vented rotor design for improved cooling
• Slotted surface type to reduce brake fade and debris buildup
• Coated hat finish for corrosion resistance
• Floating disc mounting with 5 lug holes (0.512" diameter)
• Outside diameter: 11.575 inches (294 mm)
• Nominal thickness: 0.866 inches (22 mm)
• Overall height: 2.638 inches (67 mm)

Product Line Overview: StopTech Sport Slotted Disc Brake Rotors

The StopTech Sport Slotted Disc Brake Rotors line is designed to provide enhanced braking performance for street and light track use. Featuring a slotted surface, these rotors help maintain pad bite and reduce gas buildup during braking. The vented design improves heat dissipation, which helps maintain consistent brake feel and reduces the risk of rotor warping. The coated hat finish offers additional protection against corrosion, extending rotor life. This product line balances performance and durability, making it suitable for Mazda RX-7 drivers looking for reliable upgrades.

Technical Specifications and Features

The 126.45051SR rotor features a floating disc mounting system with three miscellaneous holes and a straight vane style for efficient airflow. The rotor weighs approximately 15.75 lbs (7.16 kg), balancing strength and weight for optimal vehicle dynamics. The center hole diameter measures 2.835 inches (72 mm), and the mounting bolt hole circle diameter is 4.5 inches (114.3 mm), accommodating the RX-7's 5-lug wheel pattern. The discard thickness is 0.787 inches (20 mm), and the nominal thickness is 0.866 inches (22 mm), ensuring compliance with manufacturer specifications for safe operation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Mazda RX-7
• Improves brake cooling to reduce fade during spirited driving
• Slotted design helps clear brake dust and gases for consistent pad contact
• Coated finish protects against rust in humid or wet environments
• Supports enhanced braking performance for street and occasional track use

Installation Notes and Tips

Ensure the rotor is compatible with your specific Mazda RX-7 model year and wheel specifications before installation. Clean the rotor surface to remove any protective coatings or residues prior to mounting. Use proper torque specifications for lug nuts to avoid rotor warping. Since bearings are not included, verify the condition of existing wheel bearings during installation. The floating disc mounting requires correct alignment to maintain rotor performance.

Quality Assurance and Warranty

StopTech Sport Slotted Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The coated hat finish enhances corrosion resistance, contributing to long-term durability. While specific warranty details are not provided, StopTech products typically come with manufacturer-backed quality assurance to ensure reliable performance for Mazda RX-7 applications.