Stoptech 127.62090L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor (Part Number 127.62090L) is engineered for Pontiac GTO vehicles requiring reliable braking performance. Designed with vented construction and a coated hat finish, this rotor balances heat dissipation and corrosion resistance for consistent stopping power.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Vented rotor design to reduce brake fade under heavy use
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with Pontiac GTO models requiring 11.248 inch (285.7 mm) outside diameter rotors
• 5 lug holes with 0.5 inch (12.7 mm) diameter and 4.724 inch (120 mm) bolt circle diameter
• Nominal thickness of 0.709 inch (18.0 mm) with discard thickness at 0.630 inch (16.0 mm)
• Overall height of 3.130 inch (79.5 mm) and center hole diameter of 2.760 inch (70.1 mm)
• Floating disc mounting with pillar vane style for efficient cooling

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to enhance braking performance through improved heat management and pad bite. The cross-drilled and slotted surface pattern helps evacuate gases and debris, reducing brake fade and maintaining consistent friction. Vented rotor construction further aids in cooling, making this product line suitable for spirited driving and track use. The coated hat finish provides additional protection against rust, ensuring durability over time.

Technical Description and Fitment

This disc brake rotor is specifically engineered for Pontiac GTO models, featuring a 285.7 mm (11.248 inch) outside diameter and a 79.5 mm (3.130 inch) overall height. The rotor is vented with pillar-style vanes to optimize airflow and heat dissipation during braking. It includes five lug holes sized at 12.7 mm (0.5 inch) diameter on a 120 mm (4.724 inch) bolt circle diameter, ensuring proper fitment. The rotor’s nominal thickness is 18.0 mm (0.709 inch), with a discard thickness of 16.0 mm (0.630 inch), indicating when replacement is necessary. The center hole diameter measures 70.1 mm (2.760 inch), and the rotor weighs approximately 6.91 kg (15.2 lbs). This part does not include ABS tone rings or bearings.

Common Applications and Problem Solving

• Reduces brake fade during aggressive or repeated braking
• Improves heat dissipation to prevent rotor warping
• Maintains consistent brake pad contact by clearing debris and gases
• Resists corrosion with coated hat finish for longer service life
• Compatible replacement for worn or damaged Pontiac GTO rotors

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean mounting surfaces to prevent uneven rotor seating
• Use proper torque specifications for lug nuts to avoid rotor damage
• Check compatibility with existing brake pads and calipers on Pontiac GTO
• Inspect related components such as wheel bearings and hub assembly during installation

Quality Assurance and Warranty

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The vented design and coated finish contribute to durability and consistent braking performance. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed quality assurance to ensure reliability and customer satisfaction.