Stoptech 127.44175R 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 127.44175R) are engineered for Lexus and Toyota vehicles, including the 4Runner, FJ Cruiser, and GX460. Designed to enhance braking performance, these rotors feature a vented, slotted, and cross-drilled surface for improved heat dissipation and consistent stopping power.

• Cross-drilled and slotted surface for better heat and gas dissipation
• Vented rotor design to reduce brake fade
• Coated hat finish for corrosion resistance
• Compatible with Lexus and Toyota 4Runner, FJ Cruiser, GX460 models
• Nominal thickness of 0.709 inches (18.000 mm) with discard thickness at 0.630 inches (16.000 mm)
• Overall diameter of 12.287 inches (312.100 mm) and overall height of 2.681 inches (68.100 mm)
• 6 lug holes with a bolt circle diameter of 5.500 inches (139.700 mm)

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to provide enhanced braking performance through improved rotor cooling and debris removal. The combination of cross-drilled holes and precision slots helps maintain consistent brake pad contact and reduces the risk of brake fade under demanding driving conditions. This product line is ideal for drivers seeking reliable stopping power and rotor durability on Lexus and Toyota SUVs such as the 4Runner, FJ Cruiser, and GX460.

Technical Specifications and Features

These rotors feature a vented design with straight vanes to optimize airflow and heat dissipation. The coated hat finish protects against corrosion, extending rotor life. The rotor’s nominal thickness is 0.709 inches (18.000 mm), with a discard thickness of 0.630 inches (16.000 mm), ensuring safe replacement intervals. The outside diameter measures 12.287 inches (312.100 mm), and the overall height is 2.681 inches (68.100 mm). The rotor includes six stud/lug holes with a diameter of 0.567 inches (14.400 mm) and a mounting bolt hole circle diameter of 5.500 inches (139.700 mm). This part does not include ABS tone rings or bearings.

Applications and Problem Solving

• Improves braking performance on Lexus 4Runner, Toyota FJ Cruiser, and GX460
• Reduces brake fade during heavy or repeated braking
• Minimizes rotor warping caused by excessive heat buildup
• Enhances pad bite and braking consistency in wet or dusty conditions
• Prevents corrosion and extends rotor service life with coated hat finish

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.630 inches) before installation
• Clean rotor surface to remove any protective coatings or debris prior to mounting
• Verify compatibility with vehicle lug pattern: 6 lug holes, 5.500 inch bolt circle diameter
• Use proper torque specifications for lug nuts to avoid rotor damage
• Check for ABS tone ring requirements as this rotor does not include one

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 coated finish and vented design contribute to long-lasting performance and durability. Warranty coverage details should be confirmed with the original product documentation or authorized distributor.