Originally Posted by Nate2453

Super D, if you are in AUS, you can get a 150mm Zipp Service Course SL from our distributors. We made a limited run, they have/had some. If they don't have them in stock they should be able to help you find one. Our 140, and 150mm stems are the stiffest alloy stems we have tested. The only thing stiffer is our SL Sprint stem but that only goes to 140mm.

Nate at Zipp.