Stoptech 127.47030L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.47030L) are engineered for Subaru Impreza and WRX STI models. Designed to enhance braking performance, these rotors feature a vented, slotted, and drilled surface to improve heat dissipation and maintain consistent stopping power under demanding conditions.

• Cross-drilled and slotted rotor surface for improved heat and gas dissipation
• Vented rotor design with pillar-style vanes for enhanced cooling
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with Subaru Impreza and WRX STI models
• Disc mounting type: floating/dih for optimal rotor alignment
• 5 lug holes with 4.5-inch bolt circle diameter
• Outside diameter of 316.1 mm (12.445 inches) and overall height of 63.5 mm (2.5 inches)

Detailed Product Description

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are precision-engineered replacement rotors designed specifically for Subaru Impreza and WRX STI vehicles. Featuring a vented rotor construction with pillar-style vanes, these rotors promote efficient airflow to reduce heat buildup during aggressive braking. The cross-drilled and slotted surface pattern helps evacuate brake dust, gases, and water, improving pad bite and reducing brake fade. The coated hat finish provides corrosion resistance, helping maintain rotor integrity over time. With a nominal thickness of 20.0 mm and discard thickness of 18.0 mm, these rotors meet strict OEM specifications for durability and performance. The 5-lug hole pattern with a 114.3 mm bolt circle diameter ensures proper fitment and secure mounting. This rotor is designed with a floating/dih disc mounting style to allow slight movement, reducing stress and improving braking consistency.

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Product Line

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 improves heat dissipation and pad cleaning, which is critical for performance-oriented vehicles like the Subaru WRX STI and Impreza. This product line is engineered to provide consistent braking under high-stress conditions while maintaining durability and corrosion resistance.

Common Applications and Problem Solving

• Reduces brake fade during spirited driving or track use
• Improves wet weather braking by channeling water away from the rotor surface
• Minimizes brake dust buildup for cleaner rotor and pad contact
• Enhances heat dissipation to prevent rotor warping
• Restores braking performance on Subaru Impreza and WRX STI models with worn or damaged rotors

Installation Notes and Tips

• Ensure compatibility with Subaru Impreza and WRX STI models before installation
• Inspect brake pads and replace if worn to maximize rotor performance
• Follow manufacturer torque specifications for lug nuts and mounting bolts
• Check rotor thickness and discard limits during installation to confirm usability
• Perform a proper bed-in procedure after installation to optimize braking efficiency

Quality Assurance and Warranty

StopTech rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The coated hat finish provides corrosion resistance to extend rotor life. 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.