Ford C4 Automatic Transmission 0.839" 26 / 24 Spline Billet Steel 300M Input Shaft They are manufactured from brass

They are manufactured from brass and include thread-in brass jet extensions (where noted)

Speedmaster carburetor brackets are precision-stamped and chrome plated for a functional

Featuring billet aluminum construction with a sleek black finish

It is set up to accept a spread bore carb

Ford C4 Automatic Transmission 0.839" 26 / 24 Spline Billet Steel 300M Input Shaft They are manufactured from brassThese Performance Automatic hardened input shafts are custom forged from 9310 non twist steel. Quality, performance and great value make these hardened input shafts an essential component for anyone looking to raise their transmission to the next level.