The Ultimate Hummer H2 Halfshaft by RCV Performance Products comes with either a stock length center bar OR a custom length center bar. There is a $50.00 up charge for the custom length bars. You will not find a stronger halfshaft on planet for your H2. The out board joint allows up to 45º of articulation. These joints have been used around the world in some the toughest off-road races! To fix that vibration cause by your lift kit and to ensure your way back home get your set today! They come with RCV's "You break it, we replace it!" warranty.