Wilwood Drilled Steel Scalloped Rotor

Universal Fitment - 12.190" Outer Diameter, 0.350" Thickness, 8 x 7.000" Bolt Pattern

Part #: 160-9773

Overview

The Wilwood Drilled Steel Scalloped Rotor is engineered for motorsports applications where durability, lightweight construction, and reliable braking performance are essential. Designed to handle sustained low to moderate temperature ranges with intermittent high heat spikes, this rotor is ideal for a variety of racing disciplines including drag racing, stock car racing, and open wheel sprint cars.

If you are a racer or enthusiast seeking a robust braking solution that balances weight savings with consistent performance, this rotor offers a proven option. It is particularly suited for vehicles that experience intense braking events over short durations, such as hard stops at the end of a quarter mile or rapid deceleration after high-speed qualifying laps.

Wilwood’s steel rotor delivers dependable stopping power while maintaining structural integrity under demanding conditions, making it a trusted choice for competitive motorsports environments.

Key Features

This rotor combines thoughtful design and quality materials to meet the rigorous demands of racing applications. Key features include:

• Constructed from high-grade steel for a durable yet lightweight braking component.
• Drilled and scalloped design enhances heat dissipation and reduces rotor mass without compromising strength.
• 12.190-inch outer diameter and 0.350-inch thickness provide a balanced size for effective braking and heat capacity.
• 8 x 7.000-inch bolt pattern ensures compatibility with a wide range of racing hubs and wheel setups.
• Optimized for intermittent high heat spikes, making it suitable for drag racing, stock car racing, and sprint car applications.
• Steel construction offers consistent performance in environments where temperatures remain mostly moderate.
• Scalloped edges reduce weight and help prevent heat soak during repeated braking events.
• Precision manufacturing ensures reliable fitment and smooth operation under racing conditions.

Construction & Design

The Wilwood Drilled Steel Scalloped Rotor is crafted from premium steel, chosen for its strength-to-weight ratio and thermal properties. The drilled holes and scalloped edges are strategically placed to maximize airflow and cooling, which helps maintain braking performance during repeated high-intensity stops.

This rotor’s design reduces unsprung weight, contributing to improved suspension response and overall vehicle handling. The steel material offers excellent resistance to warping and cracking under typical racing heat cycles, ensuring longevity and reliability.

Manufactured with precision machining, the rotor maintains tight tolerances for consistent rotor thickness and flatness, which are critical for smooth braking and minimizing pedal pulsation.

Installation & Fitment

The rotor features a standard 8 x 7.000-inch bolt pattern, making it compatible with many racing hubs and wheel configurations. It is designed for straightforward installation using existing mounting points without the need for modifications.

No cutting, drilling, or special tuning is required to fit this rotor, allowing for a hassle-free upgrade or replacement in your race vehicle’s braking system.

• Direct bolt-on fitment to compatible hubs with 8 x 7.000" bolt pattern
• Compatible with a variety of motorsports vehicles including drag cars, stock cars, and sprint cars
• Installation requires standard tools and procedures

What’s Included

• One Wilwood Drilled Steel Scalloped Rotor (12.190" OD, 0.350" Thick)
• Manufacturing and installation guidelines

Ideal For

This rotor is ideal for racers and performance enthusiasts who demand a lightweight, durable braking solution capable of handling intermittent high heat conditions. It is well-suited for:

• Drag racing vehicles requiring strong, reliable stopping power after quarter-mile runs
• Stock car racers competing on superspeedways and short tracks
• Open wheel sprint cars and other lightweight race cars needing reduced unsprung weight
• Motorsports applications where moderate sustained temperatures are typical with occasional heat spikes
• Drivers seeking a balance between performance, durability, and weight savings in their braking system