Wilwood 160-9990-BK SRP Drilled Performance Rotor 12.19" x .81" Left Hand

The Wilwood 160-9990-BK is a high-performance SRP (Slotted Rotor Performance) brake rotor designed for custom, show, and sport driving applications. This left-hand directional rotor features a 12.19-inch (309mm) outside diameter with 0.81-inch thickness and a 1.91-inch offset hat design. The triple bolt pattern accommodates 5x4.50", 5x4.75", and 5x5.00" configurations for versatile fitment.

Key Features:

• Directional cross-drilled and face-slotted pattern for improved brake response and pad performance
• Vented construction with curved vanes for enhanced cooling and heat dissipation
• Precision-machined to less than .001" tolerance for flatness, parallelism, and radial run-out
• Long-grain carbon iron casting for superior thermal stability and durability
• Black electro-coat finish provides corrosion resistance on all surfaces
• Reduced rotating mass for improved handling and unsprung weight reduction

The engineered hole and slot pattern serves multiple performance functions: it reduces pad glazing, disperses gases and heat at the pad-to-rotor interface, and prevents irregular pad compound buildup. This results in smoother pedal engagement, more consistent brake response across all conditions, and extended pad life. Ideal for use with Wilwood Pro Series and Big Brake conversion kits requiring aftermarket calipers.