Pontiac GTO 04-06 / Holden VT-VZ Commodore 31 Spline HD Axle Stubs Pair (LH RH) Speedmaster has already done the

Speedmaster has already done the work for you

improved throttle response and better fuel economy

but both factors can be equally important in a race car

These Speedmaster tailshaft housings are designed to fit the stock Turbo 400 transmissions

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

Pontiac GTO 04-06 / Holden VT-VZ Commodore 31 Spline HD Axle Stubs Pair (LH RH) Speedmaster has already done theSpeedmaster axle stubs are machined from solid billet 4340 material, heat treated to the highest Rockwell hardness available, and corrosion treated. We recommend using our Speedmaster LSD or Full Spool units. We control the entire machining process and use only premium materials.