Wilwood Big Brake Hats 1.550in Offset 5 x 4.724 - 12 on 8.75in

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.

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Reference Information

HAT, 5x4.72, 1.55 OFFSET, 12x8.75 BC, FRONT

Wilwood dynamic bobbin mount hats eliminate the problems associated with thermal distortion. They incorporate a rotor mounting system that allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points so the rotors stay flatter and run truer. Also, the brake response and pedal feel remain consistent, and pad knock back, and rotor drag are eliminated. With Wilwood dynamic bobbin mounts, parking brake hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors.