EFI Sensor Kit for 1-148-004 Downdraft Manifold [Fast Kit 1-135-010] These Speedmaster supercharger manifolds are

These Speedmaster supercharger manifolds are aluminum constructed and suitable for competition or street use

The runner length and the tapered cross-section were designed to perform well for a wide range of engine configurations

Pop-Off plates are designed to release the high pressure that builds up inside of the engine to prevent damaging or cracking your supercharger components

This manifold will typically produce more power than any similar competitive manifold due to larger ports and runners

they utilize a cotton gauze with aluminum mesh construction

EFI Sensor Kit for 1-148-004 Downdraft Manifold [Fast Kit 1-135-010] These Speedmaster supercharger manifolds are