GMA M Style Front Single-Disc Brake Calipers For Harley Features: A familiar name with a new look Since the acquisition of GMA by BDL we have stepped up the style lines that have changed on these brake calipers Now offered are the smooth black anodized and the smooth chrome calipers to the product line The internal design has not changed, you just can't improve a superior quality They use the finest brake pads available along with precision made pistons to assure positive stopping power GMA by Bdl, two trusted names of quality products