Wilwood GM D154 brake calipers are made from forged billet aluminum for a lightweight, high-strength, and extreme-duty alternative to many GM cast iron calipers used from 1978 to 2002. These GM D154 calipers feature stainless steel pistons and competition-style, high-temperature seals to provide low-maintenance performance and weight savings over OE calipers. These brake calipers are also used for a variety of race and custom street applications that are converting from drum to disc brakes and are available in a wide variety of finishes. Wilwood GM D154 brake calipers are sure to provide consistent and outstanding performance compared to your OE calipers.