Stoptech 128.34080R Disc Brake Rotor - Rear Right

Overview of StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.34080R is engineered for BMW models including the 330i, 330xi, 335d, 335i, 335is, 335i xDrive, 335xi, and X1. Designed to enhance braking performance, this vented rotor features a cross-drilled surface for improved heat dissipation and consistent stopping power.

• Cross-drilled surface type for enhanced cooling and reduced brake fade
• Vented rotor design with straight vane style for efficient heat management
• Coated hat finish to resist corrosion and extend rotor life
• Nominal thickness of 21.9 mm and discard thickness of 20.4 mm for precise wear limits
• Overall diameter of 336 mm (13.228 inches) compatible with specified BMW models
• Five stud/lug holes with 14.8 mm diameter and 120 mm bolt circle diameter
• Floating disc mounting design with one miscellaneous hole for secure fitment
• Weight approximately 8.27 kg (18.2 lbs) for balanced performance

Detailed Product Description

The StopTech Sport Cross-Drilled Disc Brake Rotors are designed to meet the demands of BMW drivers seeking reliable braking performance under various driving conditions. The cross-drilled surface improves ventilation and helps dissipate heat generated during braking, reducing the risk of brake fade. The vented rotor with straight vanes further enhances airflow, maintaining optimal operating temperatures. The coated hat finish protects against rust and corrosion, ensuring durability over time. With a nominal thickness of 21.9 mm and discard thickness of 20.4 mm, these rotors provide clear wear limits for safe replacement intervals. The rotor’s 336 mm outside diameter and 75 mm center hole diameter ensure proper fitment on compatible BMW 3 Series and X1 models. The floating disc mounting system and five lug holes with a 120 mm bolt circle diameter provide secure installation and alignment.

StopTech Sport Cross-Drilled Disc Brake Rotors Product Line

The StopTech Sport Cross-Drilled Disc Brake Rotors line focuses on performance-oriented rotors that combine advanced surface treatments and vented designs. This product line is engineered to improve braking efficiency and thermal management for sporty driving applications. The cross-drilled pattern and vented construction work together to maintain consistent brake feel and reduce heat-related wear, making it suitable for BMW models that require reliable stopping power under both daily driving and spirited conditions.

Common Applications and Problem Solving

• Reduces brake fade during aggressive or extended braking
• Improves heat dissipation to prevent rotor warping
• Minimizes corrosion with coated hat finish for longer service life
• Maintains consistent brake pedal feel under varied driving conditions
• Provides precise fitment for BMW 330i, 335i, and X1 models to avoid installation issues

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (20.4 mm) before installation
• Clean rotor surface to remove any protective coatings before brake pad installation
• Verify compatibility with vehicle model and brake system specifications
• Torque lug nuts to manufacturer specifications to avoid rotor damage
• Inspect brake pads and calipers during rotor replacement for optimal performance

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet strict quality standards for 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. It is recommended to consult the product documentation or manufacturer for exact warranty terms.