Stoptech 126.34093SR Disc Brake Rotor - Front Right

StopTech Sport Slotted Disc Brake Rotors Overview

The StopTech Sport Slotted Disc Brake Rotors (Part Number 126.34093SR) are engineered for BMW models including the 335d, 335i, 335is, 335i xDrive, 335xi, and X1. Designed to enhance braking performance, these rotors feature a vented and slotted surface to improve heat dissipation and maintain consistent stopping power under demanding conditions.

• Compatible with BMW 335d, 335i, 335is, 335i xDrive, 335xi, and X1 models
• Part Number: 126.34093SR
• Vented disc design with straight vane style for efficient cooling
• Slotted surface type to reduce brake fade and improve pad bite
• Coated hat finish for corrosion resistance
• Floating disc mounting with 5 lug holes and 120 mm bolt circle diameter
• Nominal thickness of 29.9 mm and discard thickness of 28.4 mm
• Outside diameter of 348 mm (13.701 inches) and overall height of 73.3 mm (2.886 inches)
• Weight approximately 24.2 lbs (11 kg)

About StopTech Sport Slotted Disc Brake Rotors

The StopTech Sport Slotted Disc Brake Rotors line is designed to provide enhanced braking performance for street and light track use. The slotted surface helps evacuate gases, dust, and water from the rotor face, improving pad contact and reducing brake fade. The vented rotor design with straight vanes promotes effective heat dissipation, which is critical for maintaining consistent braking performance during aggressive driving. The coated hat finish offers protection against corrosion, extending rotor life and maintaining appearance.

Technical Details and Specifications

This disc brake rotor features a floating mounting design with a single miscellaneous hole and a center hole diameter of 78.9 mm (3.106 inches). It includes five stud/lug holes with a diameter of 14.6 mm (0.575 inches) arranged on a 120 mm (4.724 inches) bolt circle diameter. The rotor’s nominal thickness is 29.9 mm (1.177 inches), with a discard thickness of 28.4 mm (1.118 inches), ensuring safe replacement intervals. The overall height measures 73.3 mm (2.886 inches), and the outside diameter is 348 mm (13.701 inches). The rotor weighs approximately 24.2 lbs (11 kg), balancing durability and performance.

Applications and Problem Solving

• Improves braking performance on BMW 335d, 335i, 335is, 335i xDrive, 335xi, and X1 models
• Reduces brake fade during spirited driving or light track use
• Enhances pad bite and braking consistency in wet or dusty conditions
• Helps prevent rotor warping by improving heat dissipation
• Protects against corrosion with coated hat finish for longer service life

Installation Notes and Tips

• Ensure compatibility with specific BMW model and year before installation
• Inspect brake pads and replace if worn to optimize rotor performance
• Torque lug nuts to manufacturer specifications to avoid rotor distortion
• Check rotor thickness regularly and replace when below discard thickness
• Professional installation is recommended for proper fitment and safety

Quality Assurance and Warranty

StopTech Sport 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. Refer to StopTech or authorized distributors for exact warranty terms.