Wilwood 160-3270A Aluminum Sprint Car Rear Rotor 10.20" Drilled Hard Anodized

The Wilwood 160-3270A is a high-performance aluminum disc brake rotor engineered specifically for Sprint Car racing applications. This 10.20" diameter rotor mounts directly outboard on 42 spline, 2.75" Sprint Car axles, providing professional-grade stopping power with significant weight savings over steel rotors.

Advanced Manufacturing and Design:

• Precision CNC machined from high-strength aluminum billet for superior durability
• Full symmetrical machining ensures perfect balance, flatness, and truest rotation
• Type III hard-anodized finish increases friction coefficient and extends rotor life
• Wilwood-engineered drilled hole pattern optimizes heat dissipation while maintaining structural integrity
• 42 spline x 2.75" (3.00" overall width) axle mount design

Performance Benefits:

• Maximum weight reduction without sacrificing stopping power
• Lowest thermal distortion and run-out of any aluminum rotor on the market
• Withstands higher operating temperatures than competitor aluminum rotors
• Low knock-back characteristics deliver consistent pedal feel lap after lap
• Hard-anodized surface provides greater friction and longevity compared to standard aluminum rotors

For optimal performance and rotor life, Wilwood recommends pairing this rotor with Purple compound brake pads. The Type III anodizing process creates a harder, more wear-resistant surface that outperforms conventional aluminum rotor finishes in both durability and heat management.