Stoptech 127.44185R 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 127.44185R) are engineered for Lexus models including GS300, GS350, GS450h, IS200t, IS300, IS350, RC200t, RC300, and RC350. These rotors provide enhanced braking performance through advanced design features tailored for both street and light track use.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Vented rotor design with curved vanes to optimize airflow and reduce brake fade
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better thermal expansion and reduced warping
• Precision fit with 5 lug holes and 114.3 mm bolt circle diameter

Detailed Product Features and Specifications

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor 127.44185R features a nominal thickness of 30.000 mm (1.181 inches) and a discard thickness of 27.000 mm (1.063 inches), ensuring a durable lifespan and clear replacement guidelines. The rotor’s outside diameter measures 334.000 mm (13.150 inches) with an overall height of 51.000 mm (2.008 inches). Designed without an ABS tone ring and bearings, this vented rotor incorporates curved vanes to maximize cooling efficiency during braking. The floating disc mounting system allows for controlled rotor movement, reducing the risk of warping under high thermal stress. The rotor weighs approximately 26.1 lbs (11.84 kgs), balancing strength and weight for optimal performance.

About the StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to enhance braking performance by combining cross-drilled holes and precision slots. This design improves heat dissipation and helps remove brake dust and gases from the pad surface, which can improve braking consistency and reduce fade. The rotors are vented with curved vanes to further aid in cooling, making them suitable for Lexus vehicles that demand reliable stopping power under varied driving conditions.

Common Applications and Problem Solving

• Reduces brake fade during aggressive driving or towing
• Improves heat dissipation to prevent rotor warping
• Enhances brake pad bite and reduces glazing
• Minimizes brake dust buildup on rotor surface
• Provides consistent braking performance for Lexus GS and IS series models

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (27.000 mm) before installation
• Use proper torque specifications for the 5 lug bolts on the 114.3 mm bolt circle
• Check compatibility with vehicle ABS system as this rotor does not include an ABS tone ring
• Inspect brake pads for wear and replace if necessary to maximize rotor performance
• Follow manufacturer guidelines for bedding-in new rotors and pads

Quality Assurance and Warranty

StopTech rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The coated hat finish provides corrosion resistance to extend rotor life. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.