Stoptech 126.51021SL Disc Brake Rotor - Rear Left

StopTech Sport Slotted Disc Brake Rotors Overview

The StopTech Sport Slotted Disc Brake Rotors (Part Number 126.51021SL) are engineered for reliable braking performance on select Hyundai and Kia vehicles. Designed with a slotted surface and solid rotor construction, these rotors provide consistent stopping power and improved heat dissipation for enhanced driving control.

• Compatible with Hyundai Azera, Sonata, Tucson and Kia Cadenza, Optima models
• Solid disc brake rotor with slotted surface for better pad bite and debris removal
• Coated hat finish to resist corrosion and extend rotor life
• Nominal thickness of 0.394 inches (10.000 mm) with discard thickness at 0.331 inches (8.400 mm)
• Outside diameter of 11.181 inches (284.000 mm) and overall height of 2.146 inches (54.500 mm)
• Five lug holes with 0.492 inch (12.500 mm) diameter and 4.500 inch (114.300 mm) bolt circle diameter

Detailed Product Description

The StopTech Sport Slotted Disc Brake Rotors feature a solid rotor design with precision-machined slots that help evacuate gases, dust, and water from the braking surface. This design improves brake pad contact and reduces the risk of brake fade during demanding driving conditions. The rotor’s coated hat finish offers protection against rust and corrosion, maintaining structural integrity over time. With a nominal thickness of 0.394 inches and a discard thickness of 0.331 inches, these rotors meet strict specifications for safe and effective braking. The rotor’s dimensions, including an outside diameter of 11.181 inches and an overall height of 2.146 inches, ensure proper fitment on compatible Hyundai and Kia models. The five lug holes and mounting bolt circle diameter are designed for secure installation and alignment.

StopTech Sport Slotted Disc Brake Rotors Product Line

The StopTech Sport Slotted Disc Brake Rotors line is designed to provide enhanced braking performance for street and light track use. This product line focuses on improving brake pad bite and heat dissipation through slotted rotor surfaces, making it suitable for drivers seeking consistent braking response without the complexity of vented rotors. The 126.51021SL rotor is part of this line, offering a solid rotor option with a durable coated finish tailored for Hyundai and Kia vehicles.

Common Applications and Problem Solving

• Improves braking performance on Hyundai Azera, Sonata, Tucson and Kia Cadenza, Optima
• Reduces brake fade during extended or aggressive driving
• Helps prevent rotor surface glazing and pad deposits
• Minimizes corrosion-related rotor damage with coated hat finish
• Ensures consistent brake pedal feel and stopping power

Installation Notes and Tips

• Verify rotor dimensions and bolt pattern compatibility with your vehicle before installation
• Ensure proper torque specifications on lug nuts to avoid rotor warping
• Inspect brake pads and replace if worn to maximize rotor performance
• Clean rotor surface with brake cleaner before installation to remove any protective coatings
• Check for ABS tone ring compatibility; this rotor does not include an ABS tone ring

Quality Assurance and Warranty

StopTech Sport Slotted Disc Brake Rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. Each rotor undergoes 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. Consult product documentation or manufacturer resources for exact warranty terms.