Stoptech 127.35019R Disc Brake Rotor - Front Right

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.35019R) are engineered for Mercedes-Benz models including the 300SL, 500E, 500SL, SL320, and SL500. Designed to enhance braking performance, these rotors feature a vented, slotted, and drilled surface for improved heat dissipation and consistent stopping power.

• Cross-drilled and slotted rotor surface for better heat and gas dissipation
• Vented rotor design to reduce brake fade under heavy use
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for improved rotor alignment and performance
• Compatible with Mercedes-Benz 300SL, 500E, 500SL, SL320, and SL500 models
• Nominal thickness of 27.9 mm (1.098 inches) with discard thickness at 25.4 mm (1.000 inch)
• Overall diameter of 300 mm (11.811 inches) and overall height of 45.4 mm (1.787 inches)
• Five lug holes with a 112 mm (4.409 inches) bolt circle diameter

Detailed Product Description

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are precision-engineered to meet the demands of performance-oriented driving and daily use on select Mercedes-Benz vehicles. The vented rotor design incorporates straight vanes that facilitate efficient airflow, helping to maintain optimal operating temperatures and reduce brake fade. The cross-drilled and slotted surface improves pad bite and helps evacuate gases and debris generated during braking, which contributes to consistent pedal feel and stopping power.

These rotors feature a coated hat finish that provides corrosion resistance, protecting the rotor from rust and extending its service life. The floating disc mounting design allows for slight movement between the rotor and hub, which helps maintain proper alignment and reduces the risk of warping under thermal stress. With a nominal thickness of 27.9 mm and a discard thickness of 25.4 mm, these rotors offer a balance between durability and performance.

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Product Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed for drivers seeking enhanced braking performance through improved heat management and pad contact. This product line combines cross-drilled holes and precision slots to optimize rotor cooling and debris removal, making it suitable for spirited driving and track use while maintaining compatibility with OEM specifications. The rotors in this line are vented and coated to provide durability and consistent performance over time.

Common Applications and Issues Addressed

• Reduces brake fade during aggressive or prolonged braking
• Improves heat dissipation to prevent rotor warping
• Enhances braking response and pedal feel
• Minimizes brake dust and gas buildup on rotor surface
• Prevents corrosion on rotor hats for longer service life

Installation Notes and Tips

• Ensure compatibility with Mercedes-Benz 300SL, 500E, 500SL, SL320, and SL500 models before installation
• Check rotor thickness and discard limits to confirm suitability for replacement
• Use proper torque specifications on lug nuts to avoid rotor distortion
• Inspect brake pads and hardware during rotor replacement for optimal performance
• Follow manufacturer guidelines for bedding-in new rotors and pads

Quality Assurance and Warranty

StopTech rotors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 127.35019R disc brake rotor undergoes rigorous testing for dimensional accuracy and material integrity. 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 complete warranty information.