Rotor 3Bt .31in 10.20in Alum Midget Front

The Rotor 3Bt .31in 10.20in Alum Midget Front brake rotor is a precision-engineered aluminum disc designed for high-performance automotive braking systems. This drilled rotor delivers improved heat dissipation and reduced brake fade during sustained braking events, making it ideal for vehicles subjected to demanding duty cycles—patrol vehicles, off-road recovery operations, and track-oriented driving. The 10.200-inch outer diameter and 0.313-inch thickness are optimized for the specific bolt pattern (3 x 5.00 inches) and vehicle platform specified by the manufacturer, ensuring drop-in fitment without modification.

The black anodized finish provides corrosion resistance and a professional appearance while maintaining the structural integrity of the aluminum construction. Drilled rotor designs reduce rotor mass and improve brake pad bite by promoting outgassing during braking, a feature especially valuable in high-humidity environments or vehicles exposed to salt-air conditions. The 2.17-pound weight per rotor contributes to unsprung mass reduction, which improves suspension response and handling characteristics. This single rotor (sold individually) requires matching the axle position and brake hardware configuration for proper installation.

This rotor is purpose-built for operators and vehicle maintainers who prioritize brake performance and durability under real-world conditions. Whether upgrading a duty vehicle's braking capability or replacing worn factory rotors, proper brake system matching and professional installation are essential to realize the performance benefits of upgraded rotor specification. Verify bolt pattern and caliper clearance before ordering to ensure compatibility with your specific vehicle platform.

Aluminum rotors represent a lighter, thermally responsive alternative to cast iron in applications where brake fade resistance and weight reduction are priorities. However, thermal cycling and corrosive environments require proper maintenance and periodic inspection to ensure safe operation. TacticalSurplusUSA provides genuine rotor components for those who demand verified fitment and documented specifications.