Stoptech 127.47021R 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 127.47021R) are engineered for enhanced braking performance and durability. Designed specifically for select Scion, Subaru, and Toyota models, these rotors provide reliable stopping power with improved heat dissipation and reduced brake fade.

• Cross-drilled and slotted surface for efficient heat and gas dissipation
• Vented rotor design to maintain optimal operating temperatures
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for improved rotor alignment and reduced warping
• Compatible with 5-lug wheel configurations and specific bolt patterns

Detailed Product Features and Specifications

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors feature a vented design with straight vanes that promote airflow and cooling during aggressive driving conditions. The rotor has an outside diameter of 293.5 mm (11.555 inches) and an overall height of 56.7 mm (2.232 inches), with a nominal thickness of 24.0 mm (0.945 inches) and a discard thickness of 22.0 mm (0.866 inches). The hat section is coated to protect against rust and corrosion, ensuring long-term durability. This rotor includes two miscellaneous holes and a center hole diameter of 58.0 mm (2.283 inches), designed for a floating disc mounting system that helps reduce stress and improve braking consistency. The rotor weighs approximately 7.95 kg (17.5 lbs), balancing strength and weight for performance applications.

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to offer enhanced braking performance for sport compact and performance vehicles. The cross-drilled and slotted surface improves pad bite and helps evacuate heat and brake dust, which is critical for maintaining consistent braking under demanding conditions. This product line focuses on vented rotors with corrosion-resistant coatings and floating disc mounting to reduce rotor warping and extend service life, making it suitable for vehicles like the Subaru WRX, Toyota 86, and Scion FR-S.

Compatible Vehicles and Common Applications

• Scion 86 and FR-S
• Subaru BRZ, WRX, Impreza, Legacy, Forester, Outback, Baja, Crosstrek, XV Crosstrek
• Toyota GR86

This rotor is ideal for drivers seeking improved braking performance on these models, especially in spirited driving or light track use scenarios.

Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup during aggressive driving
• Uneven rotor wear and warping from thermal stress
• Corrosion and rust on rotor hats reducing lifespan
• Poor brake pad bite and reduced stopping power
• Brake dust accumulation affecting rotor and pad performance

Installation Notes and Tips

• Ensure compatibility with vehicle’s 5-lug bolt pattern and 100 mm bolt circle diameter
• Check rotor thickness before installation; replace if below discard thickness of 22.0 mm
• Use proper torque specifications on mounting bolts to avoid rotor distortion
• Inspect brake pads and calipers for wear or damage during rotor replacement
• Perform a bed-in procedure after installation to optimize rotor and pad contact

Quality Assurance and Warranty

StopTech rotors are manufactured to meet or exceed OEM specifications, ensuring reliable performance and safety. 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 manufacturing defects. It is recommended to consult the product documentation or manufacturer for exact warranty terms.