Stoptech 127.42021L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor 127.42021L is engineered for Nissan 300ZX models requiring reliable braking performance. Designed with a solid rotor construction and a coated hat finish, this rotor balances durability and heat dissipation for consistent stopping power.

• Compatible with Nissan 300ZX vehicles
• Part number: 127.42021L
• Solid disc brake rotor with cross-drilled and slotted surface
• Coated hat finish for corrosion resistance
• Overall diameter: 290 mm (11.417 inches)
• Nominal thickness: 10.000 mm (0.394 inches)
• Discard thickness: 9.000 mm (0.354 inches)
• Floating disc mounting design
• 4 stud/lug holes with 114.3 mm bolt circle diameter
• Weight approximately 4.89 kg (10.75 lbs)

Detailed Product Description

This StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor (part number 127.42021L) is specifically designed for the Nissan 300ZX, providing a solid rotor with enhanced surface features. The cross-drilled and slotted design improves brake pad bite and helps evacuate gases and debris, which can improve braking consistency under demanding conditions. The rotor’s coated hat finish offers protection against corrosion, extending the rotor’s service life. With a nominal thickness of 10 mm and a discard thickness of 9 mm, this rotor maintains structural integrity while allowing for safe wear limits. The floating disc mounting design helps accommodate thermal expansion and reduces the risk of warping during heavy braking.

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on performance-oriented rotors that combine cross-drilled holes and precision slots to enhance brake cooling and pad cleaning. This product line is engineered to meet the demands of sporty driving and track use while maintaining compatibility with street vehicles like the Nissan 300ZX. The solid rotor design in this line offers a balance between durability and heat dissipation, making it suitable for drivers seeking improved braking response without the complexity of vented rotors.

Common Applications and Problem Solving

• Reduces brake fade during spirited driving or track sessions
• Improves brake pad bite and initial response
• Helps prevent glazing and buildup on brake pads
• Minimizes rotor warping caused by heat stress
• Protects against corrosion with coated hat finish

Installation Notes and Tips

• Ensure compatibility with Nissan 300ZX before installation
• Check rotor thickness and discard limits during replacement
• Use proper torque specifications for the 4 lug holes on the 114.3 mm bolt circle
• Inspect brake pads and hardware for wear when installing new rotors
• Perform a bed-in procedure after installation for optimal performance

Quality Assurance and Warranty

StopTech rotors are manufactured to meet strict quality standards for fitment and performance. The 127.42021L rotor undergoes precision machining and coating processes to ensure durability and consistent braking. 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.