Wilwood 160-17518 Curved Vane Disc Brake Rotor - GT-36 Spec-37 11.75in LH

The Wilwood 160-17518 is a GT-36 Curved Vane Spec-37 disc brake rotor engineered for the extreme demands of professional motorsports and high-performance street use. Cast from Wilwood's proprietary Spec-37 iron alloy — a formulation derived from military-grade rotor technology — this rotor delivers exceptional resistance to distortion, warping, cracking, and thermal wear at sustained high temperatures.

Heavy-wall directional curved vane construction maximizes heat absorption and dissipation, making this rotor a proven solution for preventing brake fade on short tracks and road course applications. The left-hand (LH) directional design ensures proper airflow through the 36 curved vanes for optimum cooling performance.

Key Features:

• Spec-37 proprietary iron alloy — military-derived formulation for maximum thermal stability and long wear life
• 36 curved directional vanes — heavy-wall construction for superior heat dissipation and fade resistance
• Precision machined faces and O.D. — turned to less than .001" for flatness, parallelism, and runout
• Asymmetrical face slot pattern — reduces harmonics and improves thermal balance between I.D. and O.D.
• Full detail machining — eliminates stress points and removes unnecessary weight from the pad sweep face
• Individual dynamic balancing — ensures vibration-free performance at any speed
• Left-hand (LH) fitment — directional vane orientation for proper airflow on driver side
• 11.75" diameter × 0.810" width — heavy-wall casting suitable for high-temperature racing and street use
• 8 × 7.00" bolt circle — wide compatibility with GT-series brake applications

The Wilwood GT-36 Spec-37 rotor delivers the highest cooling capacity and longest service life available in an iron rotor, making it the preferred choice for serious competitors in short track oval and road course racing.