Description
The Wilwood HD Series Rear Drag Rotor Hat (Part Number 170-12529) is engineered for high-performance applications requiring reliable fit, durability, and efficiency. Crafted from premium grade aluminum alloys, this rotor hat offers a balanced combination of high strength and low weight, making it ideal for racing and custom automotive builds. Its straight bell construction with a flanged rotor mount ring ensures a secure fit, while threaded-hole mounts facilitate compatibility with through-hole rotors for versatile installation options. Designed to work seamlessly with Wilwood’s rotor hardware, this rotor hat provides solid mounting support for a wide range of competition and custom disc brake setups. Its robust design maximizes radial clearance between the caliper and the hat, a critical feature when fitting large calipers within small wheels, enhancing overall brake performance and clearance. The rotor hat supports a 5 x 4.75-inch bolt pattern with an offset of 1.96 inches, fitting 8 on 7.00-inch bolt circle configurations, and is suitable for various racing and performance vehicles. Many of these hats are offered in multi-lug wheel patterns or can be ordered blank for customized applications, including custom axle builds. This product is a reliable choice for racers and enthusiasts seeking a durable, high-performance rotor mounting solution that maintains precise fitment and enhances brake system efficiency.
Features:
- Made from high-strength, lightweight aluminum alloys for durability and performance
- Straight bell construction with flanged rotor mount ring for secure attachment
- Threaded-hole mounts compatible with through-hole rotors for versatile use
- Maximizes radial clearance between caliper and rotor for optimal fitting of large calipers
- Supports 5 x 4.75 inch bolt pattern with 1.96 inch offset, fitting 8 on 7.00 inch bolt circle


















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