6-71 to 14-71 12Pt 2.50" Aluminum Blower Supercharger Break Away Stud Kit They use silicon aluminum bi-metal

They use silicon aluminum bi-metal construction

Polished aluminum air cleaner assemblies add a touch of class and style to your machine

They use less horsepower and can move more water than any other pumps

it permits the direct bolt-on of any 4

Speedmaster aluminum starter spacer plate to fit starter to a Manual type engine

6-71 to 14-71 12Pt 2.50" Aluminum Blower Supercharger Break Away Stud Kit They use silicon aluminum bi-metalThese 7 16 in. anodized aluminum studs from Speedmaster allow your blower and manifold to separate during a blower explosion to minimize engine damage. These kits also include 12 point, aerospace quality nuts and parallel, ground hardened washers.