Stoptech 126.47021SL Disc Brake Rotor - Front Left

StopTech Sport Slotted Disc Brake Rotors Overview

The StopTech Sport Slotted Disc Brake Rotors (Part Number 126.47021SL) are engineered for enhanced braking performance on select Scion, Subaru, and Toyota models. Designed with precision, these rotors provide reliable stopping power and improved heat dissipation for vehicles such as the Subaru WRX, Toyota 86, and Scion FR-S.

• Slotted surface for improved pad bite and debris removal
• Vented rotor design to enhance cooling and reduce brake fade
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better thermal expansion management
• Compatible with 5-lug wheel setups with 100mm bolt circle diameter

Product Line Details: StopTech Sport Slotted Disc Brake Rotors

The StopTech Sport Slotted Disc Brake Rotors line focuses on delivering performance-oriented rotors with slotted surfaces and vented designs. This combination improves braking consistency by promoting better heat dissipation and maintaining pad contact. The slotted pattern helps clear gases and debris from the pad surface, which is beneficial for spirited driving and track use. The 126.47021SL rotor exemplifies these features, making it suitable for drivers seeking enhanced braking on compatible Scion, Subaru, and Toyota vehicles.

Technical Specifications and Features

These rotors feature a nominal thickness of 0.945 inches (24.000 mm) and a discard thickness of 0.866 inches (22.000 mm), ensuring a solid lifespan before replacement is necessary. The overall height measures 2.232 inches (56.700 mm), with an outside diameter of 11.555 inches (293.500 mm). The rotor includes a floating disc mounting system and straight vane style for efficient airflow and cooling. The hat section is coated to resist corrosion, with a center hole diameter of 2.283 inches (58.000 mm) and a mounting bolt hole circle diameter of 100.000 mm (3.937 inches). This rotor weighs approximately 17.5 lbs (7.95 kgs), balancing durability and performance.

Compatible Vehicles and Applications

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

This rotor is designed specifically for these models, ensuring proper fitment and optimal braking performance.

Common Issues Addressed by This Rotor

• Brake fade during aggressive driving or track use
• Uneven pad wear due to heat buildup
• Corrosion and rust on rotor hats reducing lifespan
• Reduced braking efficiency from gas and debris accumulation
• Warping caused by thermal stress

Installation Notes and Tips

Installation requires a compatible 5-lug wheel hub with a 100mm bolt circle diameter. Ensure the rotor is mounted floating to allow for thermal expansion. The coated hat finish helps prevent corrosion, but proper cleaning of the hub surface before installation is recommended. Bearings and ABS tone rings are not included and should be reused or replaced as needed. Always torque lug nuts to manufacturer specifications and verify rotor thickness before installation.

Quality Assurance and Warranty

StopTech Sport Slotted Disc Brake Rotors are manufactured to meet or exceed OEM standards for durability and performance. The coated hat finish provides additional corrosion resistance to extend service life. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or StopTech directly for warranty terms related to part number 126.47021SL.