Wilwood 160-15871-B GT Curved Vane Disc Brake Rotor Bedded - 48 Spec-37

The Wilwood 160-15871-B is a GT 48 Curved Vane Spec-37 disc brake rotor engineered for serious motorsports competition. Cast from Wilwood's proprietary Spec-37 iron alloy — a formulation derived from technology developed for extreme-duty military-spec rotors — this rotor delivers exceptional resistance to distortion, warping, cracking, and wear under sustained high-heat conditions.

Key Features:

• Spec-37 Proprietary Iron Alloy: Developed to withstand extreme braking temperatures with superior thermal stability and longevity
• 48 Curved Vane Design: Maximizes airflow through the rotor for the highest possible cooling capacity and extended service life
• Asymmetrical GT Series Face Slot Pattern: Reduces harmonic vibration and promotes even thermal distribution across the rotor face
• Individual Dynamic Balancing: Every rotor is balanced independently for smooth, vibration-free performance at any speed
• Bedded Finish (-B suffix): Pre-bedded black e-coat surface treatment for corrosion resistance and faster break-in
• Military-Derived Alloy Technology: Iron formulation rooted in Wilwood's development of extreme-duty defense-grade brake components

Designed for short track and road course racing environments, the 160-15871-B provides the thermal management and durability demanded by competitive motorsports. The combination of curved vane cooling, precision slot geometry, and Spec-37 iron makes this rotor a proven choice where consistent stopping power and fade resistance are critical.