Wilwood HD Series Fixed Mount Aluminum Rotor Hat for 4-Lug Axle Shaft

Wilwood HD Series Fixed Mount Aluminum Rotor Hat — 4-Lug Axle Shaft High-strength, lightweight rotor hats engineered for performance and fit. The Wilwood HD Series fixed mount aluminum rotor hat for 4-lug axle shafts delivers proven durability and race-ready precision for custom and OEM disc brake conversions. Key Features Premium aluminum alloy construction: superior strength with reduced unsprung weight for improved braking response. Straight bell design with flanged rotor mount ring for secure rotor seating and consistent runout control. Threaded-hole mounts compatible with through-hole rotors; works with Wilwood rotor hardware for reliable assembly. Maximum radial clearance between caliper body and hat — ideal for fitting large calipers inside compact wheels. Versatile fitment supports OE four-lug axle shafts and many racing hubs; select hats available with multi-lug patterns or blank for custom axle building. Why Choose Wilwood HD Series Trusted in race kits and street applications alike, Wilwood HD hats combine show-quality finish with the rugged performance expected in competition. Whether upgrading a classic, building a custom axle, or maximizing caliper clearance in tight wheel packages, these hats provide dependable mounting and long-term durability. Fitment tip: Verify lug pattern and rotor compatibility before ordering. For best results use with matching Wilwood rotor hardware.