Stoptech 227.47021R Disc Brake Rotor - Front Right

StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 227.47021R) 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
• Floating disc mounting for better rotor alignment and reduced warping
• Compatible with ABS systems (ABS tone ring not included)
• Precision fit for 5-lug bolt patterns with 100 mm bolt circle diameter

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

The StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on delivering enhanced braking performance through advanced rotor surface technology. The combination of cross-drilled holes and precision slots improves water, dust, and gas evacuation from the rotor surface, which helps maintain consistent brake pad contact and reduces the risk of brake fade. This product line is designed for drivers seeking a balance between everyday driving reliability and sporty braking response.

Technical Specifications and Compatibility

This disc brake rotor features a vented design with straight vanes to optimize airflow and cooling. The rotor has an outside diameter of 293.5 mm (11.555 inches) and an overall height of 56.7 mm (2.232 inches). The nominal thickness is 24.0 mm (0.945 inches), with a discard thickness of 22.0 mm (0.866 inches), ensuring long service life before replacement is necessary. The center hole diameter measures 58.0 mm (2.283 inches), and the rotor mounts on a 5-lug pattern with 12.7 mm (0.5 inch) stud holes spaced on a 100 mm (3.937 inch) bolt circle diameter. This rotor does not include bearings or an ABS tone ring.

Compatible Vehicles

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

Common Applications and Problem Solving

• Reduces brake fade during spirited driving or heavy braking
• Improves heat dissipation to prevent rotor warping
• Enhances braking response and pedal feel
• Minimizes brake dust buildup on rotor surface
• Maintains consistent braking performance in wet conditions

Installation Notes and Tips

Ensure the rotor is installed on compatible 5-lug hubs with a 100 mm bolt circle diameter. Verify that the rotor thickness is within specifications before installation, replacing if below the discard thickness of 22.0 mm. Use proper torque specifications for mounting bolts and inspect brake pads for wear during rotor replacement. This rotor is designed for floating disc mounting, which allows slight movement to reduce stress and improve alignment.

Quality Assurance and Warranty

StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The vented and cross-drilled design undergoes rigorous quality control to ensure durability and consistent performance. Warranty coverage details should be confirmed with the original product documentation or authorized distributor.