Stoptech 127.34054R Disc Brake Rotor - Rear Right

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.34054R) are engineered for BMW M3 and M5 models, providing reliable braking performance with enhanced heat dissipation. These vented rotors feature a coated hat finish and a slotted and drilled surface design to improve pad bite and reduce brake fade.

• Compatible with BMW M3 and M5 vehicles
• Cross-drilled and slotted surface for improved cooling and debris removal
• Vented rotor design with straight vane style for efficient heat dissipation
• Coated hat finish to resist corrosion and extend rotor life
• Nominal outside diameter of 327 mm (12.874 inches) and overall height of 61.7 mm (2.429 inches)
• 5 lug/stud holes with a 120 mm (4.724 inches) bolt circle diameter
• Floating disc mounting design with 2 miscellaneous holes for secure fitment

Detailed Product Description

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are designed specifically for high-performance braking applications on BMW M3 and M5 models. The rotors measure 327 mm in outside diameter and have a nominal thickness of 20 mm, ensuring compatibility with factory calipers and brake pads. Featuring a vented rotor design with straight vanes, these rotors promote consistent airflow to reduce heat buildup during aggressive driving or track use. The cross-drilled and slotted surface enhances pad bite and helps evacuate gases, dust, and water, improving braking response and reducing the risk of brake fade.

The coated hat finish protects the rotor hub from corrosion, maintaining structural integrity and appearance over time. The rotor’s floating mounting design with two additional holes ensures proper alignment and fitment on the vehicle’s hub assembly. With a 5-lug configuration and a 120 mm bolt circle diameter, these rotors are engineered to meet the exact specifications required for BMW M3 and M5 models.

Applications and Problem Solving

• Improves braking performance under high heat conditions
• Reduces brake fade during spirited driving or track use
• Enhances pad bite and braking response with slotted and drilled design
• Prevents corrosion on rotor hats for longer service life
• Compatible replacement for worn or warped factory rotors on BMW M3 and M5

Installation Notes and Tips

• Ensure rotor thickness is within discard limits: minimum 18.4 mm (0.724 inches)
• Verify compatibility with existing brake pads and calipers before installation
• Clean rotor surface with brake cleaner to remove any protective coatings before use
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Check for ABS tone ring compatibility; this rotor does not include an ABS tone ring

Quality Assurance and Warranty

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The rotors undergo rigorous quality control to ensure durability and consistent performance. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Consult StopTech or authorized distributors for exact warranty terms.