Stoptech 127.66000R Disc Brake Rotor - Front Right

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.66000R) are engineered for reliable braking performance on a range of GM vehicles including Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac models. Designed to meet the demands of both street and light performance driving, these rotors offer enhanced heat dissipation and consistent stopping power.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Vented rotor design to reduce brake fade under heavy use
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with 5-lug wheel setups and 0.500 inch stud thread diameter
• Nominal thickness of 1.283 inches (32.590 mm) with discard thickness at 1.215 inches (30.860 mm)
• Overall outside diameter of 11.850 inches (301.000 mm)
• Weight approximately 29.4 lbs (13.36 kgs) for balanced performance

Product Line Details

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on delivering rotors that combine cross-drilled holes and slots to optimize braking efficiency. This design helps to evacuate gases, dust, and water from the rotor surface, improving pad contact and reducing the risk of brake fade. The vented rotor construction further aids in cooling, making these rotors suitable for vehicles like the Chevrolet Blazer, Cadillac DeVille, and GMC Sierra that may experience varied driving conditions.

Technical Specifications and Compatibility

This disc brake rotor features a vented design with straight vanes to maximize airflow and cooling. The coated hat finish protects against rust and corrosion, which is essential for maintaining rotor integrity over time. The rotor fits vehicles equipped with a 5-lug wheel pattern and a mounting bolt hole circle diameter of 5.000 inches (127.000 mm). It is compatible with models such as the Buick LeSabre, Pontiac Bonneville, Chevrolet C1500 Suburban, and Oldsmobile Delta 88.

Common Applications and Problem Solving

• Reduces brake fade during extended or heavy braking
• Improves braking response in wet or dusty conditions
• Minimizes rotor warping caused by excessive heat buildup
• Enhances pad bite and overall braking consistency
• Prevents corrosion-related rotor damage for longer service life

Installation Notes and Tips

Ensure the rotor is installed on compatible vehicles such as the Chevrolet Impala or GMC Jimmy with the correct 5-lug wheel setup. Verify the rotor thickness before installation; replace if below the discard thickness of 1.215 inches (30.860 mm). Use proper torque specifications for mounting bolts and inspect related components like bearings (Inner Bearing #410.91005, Outer Bearing #410.91003) and seals (Inner Seal #417.66000) during installation. No ABS tone ring is included, so confirm compatibility with your vehicle’s ABS system.

Quality Assurance and Warranty

StopTech rotors are manufactured to meet or exceed OEM standards for durability and performance. The coated finish and vented design contribute to extended rotor life and consistent braking. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed quality assurance to ensure reliability and customer satisfaction.