Stoptech 126.42100SR Disc Brake Rotor - Front Right

StopTech Sport Slotted Disc Brake Rotors Overview

The StopTech Sport Slotted Disc Brake Rotors (Part Number 126.42100SR) are engineered for enhanced braking performance on select Infiniti and Nissan vehicles. Designed with precision, these rotors provide reliable stopping power and improved heat dissipation for models such as the Infiniti G37, Q50, and Nissan 370Z.

• Vented disc brake rotor with slotted surface for improved heat management
• Coated hat finish to resist corrosion and extend rotor life
• Nominal thickness of 1.260 inches (32.000 mm) with discard thickness at 1.181 inches (30.000 mm)
• Overall height of 1.937 inches (49.200 mm) and outside diameter of 13.976 inches (355.000 mm)
• Floating disc mounting design with straight vane style for efficient cooling
• 5 lug holes with a 4.5 inch (114.300 mm) bolt circle diameter

Detailed Product Description

The StopTech Sport Slotted Disc Brake Rotors are specifically designed to meet the demands of performance-oriented driving on compatible Infiniti and Nissan models including the 350Z, 370Z, FX50, G37, M35h, M37, M56, Q50, Q60, Q70, Q70L, QX70, and Z. Featuring a vented rotor design with straight vanes, these rotors promote effective heat dissipation to reduce brake fade during aggressive braking. The slotted surface enhances pad bite and helps evacuate gases and debris, maintaining consistent braking performance.

The coated hat finish protects against rust and corrosion, ensuring durability over time. With a floating disc mounting system and a precise 5-lug bolt pattern, installation aligns with factory specifications. The rotor’s nominal thickness of 1.260 inches (32.000 mm) and discard thickness of 1.181 inches (30.000 mm) provide clear service limits for maintenance.

About StopTech Sport Slotted Disc Brake Rotors

The StopTech Sport Slotted Disc Brake Rotors line is designed for drivers seeking improved braking response and thermal management without compromising OEM fitment. This product line focuses on slotted rotors that enhance pad contact and heat dissipation, making them suitable for spirited street driving and occasional track use. The 126.42100SR rotor exemplifies this balance by combining vented construction with a corrosion-resistant coating.

Common Applications and Problem Solving

• Reduces brake fade during high-performance or aggressive driving
• Improves braking consistency by evacuating gases and debris
• Prevents rotor corrosion with coated hat finish
• Maintains OEM fitment for Infiniti and Nissan models listed
• Supports safe braking by meeting discard thickness specifications

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Use proper torque specifications for the 5-lug mounting pattern (114.3 mm bolt circle)
• Inspect brake pads and replace if worn to optimize rotor performance
• Clean rotor surface before installation to remove any protective coatings
• Verify compatibility with ABS sensors as this rotor does not include an ABS tone ring

Quality Assurance and Warranty

StopTech Sport Slotted Disc Brake Rotors are manufactured to meet strict quality standards for durability and performance. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.