MFACTORY MAZDA 3/6 PROTEGE MPS 5 SPEED FINAL DRIVE GEARS - 4.933 exterior The Ram Air Box is

The Ram Air Box is manufactured from crosslinked polymer to provide superior thermal rejection and structural strength as the air filter's housing

a true endurance option

There was no reason to mess with a great and proven design

Though the standard Ultra Manifold already allows for 8 injectors to be mounted using two fuel rails

this cavitation can be catastrophic

MFACTORY MAZDA 3/6 PROTEGE MPS 5 SPEED FINAL DRIVE GEARS - 4.933 exterior The Ram Air Box isTake your performance to the next level with the MFactory PRO Series Gears. Recognizing the demand for transmission components that can withstand the extreme shock loads produced during Drag Racing, MFactory Competition Products are proud to offer our range of top tier competition level gears. Final drive gears are cut from high quality fully carburized forged nickel chromoly steel while also benefitting from a proprietary heat treatment process. As a