MFACTORY BMW E30 323I 325I M3 85-92 FINAL DRIVE GEARS 5.43 exterior CNC mill-cut flanges & robotic

CNC mill-cut flanges & robotic rotation purge TIG welding

Skunk2's Evo Composite Fuel Rails are compatible with the factory fuel system

best fitting intake system available

TEGIWA Cat Back Exhaust System

The perfect bundle for a quick brake refresh

MFACTORY BMW E30 323I 325I M3 85-92 FINAL DRIVE GEARS 5.43 exterior CNC mill-cut flanges & roboticTake your performance to the next level with the MFactory 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 result we