Wilwood Dynapro Lug Mount Single Rear Dynamic Kit SA Drilled M-W/Lamb Ends 1/2in Studs

This is the Wilwood Dynapro Lug Mount Single Rear Dynamic Kit, part number 140-12549-D. It's a well-built brake system specifically designed for the rear of your vehicle, especially beneficial for cars that rely heavily on their rear brakes for stopping power or generate significant heat during high-speed driving. The unique lug-drive rotor mounting system is a key feature here. Instead of traditional rotor bolts, it uses a large internal snap-ring to hold the rotor to the hat. This design allows the rotor to expand and contract freely with heat cycles, preventing thermally generated stress at the attachment points. The result is rotors that stay flatter and run truer, leading to more consistent braking performance.

The hats are also protected from the stresses of thermal expansion and contraction. Wilwood has incorporated spring-loaded, replaceable stainless steel inserts into each lug-drive slot. These inserts act as a barrier, preventing wear on the aluminum hat from the stainless steel rotor's movement under braking torque. This kit is available in a 11.44-inch rotor diameter, offering a substantial upgrade over stock components. This is a single caliper configuration kit, designed to handle demanding braking conditions and keep your rear brakes performing optimally.