Stoptech 127.34036L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor 127.34036L is engineered for BMW M3 and Z3 models requiring reliable braking performance. Designed with vented construction and a coated hat finish, this rotor balances heat dissipation and corrosion resistance for consistent stopping power.

• Cross-drilled and slotted surface for improved brake pad bite and heat dissipation
• Vented rotor design with curved vanes to enhance cooling
• Coated hat finish to resist rust and corrosion
• Compatible with BMW M3 and Z3 models
• Disc mounting type: floating/dih for optimal rotor alignment
• Overall diameter: 312 mm (12.283 inches) with 5 lug holes
• Nominal thickness: 20.2 mm (0.795 inches) with discard thickness at 18.4 mm (0.724 inches)

Detailed Product Features and Specifications

This StopTech rotor features a vented design with curved vanes that promote efficient airflow, reducing brake fade during aggressive driving or track use. The cross-drilled and slotted surface pattern helps evacuate gases, dust, and water from the braking surface, improving pad contact and braking consistency. The coated hat finish protects the rotor’s center from corrosion, extending service life. With an overall height of 61.2 mm (2.409 inches) and a center hole diameter of 75 mm (2.953 inches), this rotor is engineered to precise OEM specifications for BMW M3 and Z3 vehicles. The rotor includes five lug holes with a bolt circle diameter of 120 mm (4.724 inches) and stud hole diameter of 14.7 mm (0.579 inches).

About StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to enhance braking performance by improving heat dissipation and pad bite through advanced surface treatments. This product line focuses on vented rotors with cross-drilled holes and slots to maintain consistent braking under demanding conditions. The 127.34036L rotor is part of this line, offering a balance of durability and performance for BMW M3 and Z3 drivers seeking reliable stopping power without compromising rotor longevity.

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 braking components
• Prevents rotor warping by enhancing heat dissipation
• Restores OEM braking performance on BMW M3 and Z3 models

Installation Notes and Tips

• Ensure compatibility with BMW M3 and Z3 models before installation
• Check rotor thickness and discard limits to confirm suitability
• Use proper torque specifications for the 5 lug bolts during mounting
• Inspect brake pads and calipers for wear when replacing rotors
• Perform a bed-in procedure after installation to optimize braking performance

Quality Assurance and Warranty

StopTech rotors are manufactured to meet or exceed OEM standards, ensuring consistent quality and performance. The 127.34036L rotor undergoes rigorous testing for durability and heat resistance. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.