Stoptech 128.34051L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.34051L is engineered for BMW X5 models requiring reliable braking performance. Designed with precision, this solid rotor features a cross-drilled surface to enhance heat dissipation and maintain consistent stopping power under demanding conditions.

• Compatible with BMW X5 vehicles
• Part number: 128.34051L
• Solid disc brake rotor with cross-drilled surface
• Coated hat finish for corrosion resistance
• Outside diameter: 324 mm (12.756 inches)
• Nominal thickness: 12.000 mm (0.472 inches)
• Discard thickness: 10.400 mm (0.409 inches)
• Overall height: 80.100 mm (3.154 inches)
• 5 lug holes with 120 mm bolt circle diameter
• Center hole diameter: 75 mm (2.953 inches)
• Weight approximately 7 kg (15.41 lbs)

Detailed Product Description

This StopTech Sport Cross-Drilled Disc Brake Rotor 128.34051L is a solid rotor designed specifically for the BMW X5, providing consistent braking performance. The cross-drilled surface improves heat dissipation and helps reduce brake fade during extended use. The rotor features a coated hat finish to resist corrosion and extend service life. With a nominal thickness of 12.000 mm and a discard thickness of 10.400 mm, this rotor meets strict specifications for safe and effective braking. The rotor’s 5-lug hole pattern with a 120 mm bolt circle diameter ensures proper fitment and secure mounting. Weighing approximately 7 kg, it balances durability with manageable weight for the vehicle’s braking system.

StopTech Sport Cross-Drilled Disc Brake Rotors Product Line

The StopTech Sport Cross-Drilled Disc Brake Rotors line focuses on performance-oriented rotors that feature cross-drilled surfaces to enhance cooling and braking consistency. This product line is designed for drivers who require reliable stopping power with improved heat management, making it suitable for both street and light track use. The 128.34051L rotor is part of this line, offering a solid rotor design with a coated hat finish to resist corrosion and maintain structural integrity over time.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on BMW X5 models
• Improves heat dissipation to reduce brake fade during heavy braking
• Addresses rotor corrosion with coated hat finish
• Restores braking performance compromised by rotor thickness below discard limits
• Provides consistent braking feel and pedal response

Installation Notes and Tips

• Ensure rotor thickness is within nominal and discard specifications before installation
• Clean mounting surfaces to prevent uneven rotor seating
• Torque lug nuts to manufacturer specifications for secure fitment
• Check compatibility with existing brake pads and calipers on BMW X5
• Inspect wheel bearings and related components during rotor replacement

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. The 128.34051L rotor undergoes rigorous quality control to ensure 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. Consult product documentation or manufacturer resources for exact warranty terms.