Stoptech 127.66000L Disc Brake Rotor - Front Left

Overview of StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.66000L) are engineered for reliable braking performance on a range of GM vehicles. Designed to meet the demands of models like the Chevrolet C10, Cadillac DeVille, and Buick LeSabre, these rotors provide consistent stopping power with enhanced heat dissipation.

• Cross-drilled and slotted surface for improved heat and gas dissipation
• Vented rotor design with straight vanes for efficient cooling
• Coated hat finish to resist corrosion and extend rotor life
• Nominal thickness of 1.283 inches (32.590 mm) with discard thickness at 1.215 inches (30.860 mm)
• Compatible with 5-lug wheel configurations and 0.500 inch stud thread diameter
• Overall diameter of 11.85 inches (301 mm) and overall height of 4.882 inches (124 mm)

Product Line Details

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on delivering enhanced braking performance through advanced rotor surface technology. The combination of cross-drilled holes and precision slots helps to reduce brake fade by allowing gases and heat to escape more efficiently. This product line is designed for drivers who require dependable braking on vehicles such as the Pontiac Bonneville, GMC Jimmy, and Oldsmobile Delta 88, ensuring consistent pedal feel and improved stopping distances under demanding conditions.

Technical Specifications and Features

These rotors feature a vented design with straight vanes that promote airflow to maintain optimal operating temperatures. The coated hat finish protects against rust and corrosion, which is especially beneficial for vehicles exposed to harsh weather. The rotor’s mounting bolt hole circle diameter measures 5.000 inches (127 mm), fitting securely on compatible hubs. With a center hole diameter of 3.059 inches (77.700 mm), these rotors are designed for precise fitment on select Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac models.

Applications and Problem Solving

• Reduces brake fade during extended or aggressive braking
• Improves heat dissipation to prevent rotor warping
• Enhances braking response and pedal feel on GM trucks and SUVs
• Minimizes corrosion on rotor hats for longer service life
• Compatible with ABS systems that do not require tone rings

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (1.215 inches) before installation
• Verify compatibility with vehicle’s 5-lug wheel pattern and stud thread diameter of 0.500 inches
• Clean mounting surfaces to prevent uneven rotor seating
• Torque mounting bolts to manufacturer specifications for secure fitment
• Check for proper clearance with calipers and brake pads before final installation

Quality Assurance and Warranty

StopTech rotors are manufactured to meet or exceed OEM standards for durability and performance. The vented and coated design contributes to extended rotor life and consistent braking. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.