Buy this and get a date with Paris or Lindsey.
It's got the smooth loveable ride ability of the Stairmaster, but every piece of the puzzel received an upgrade. What's that mean to you? More bang for the buck. DS Select core is poppier, Sintered base is faster, the glass weave gives you more power out of turns and the edge dampening system keeps you from blowing out edges when you getting your thing on with them park boxes. Fact is that shop kids loved our Stairmaster but wanted a little something something added to it, so that's what you get with the EXTREME.