How do you decide whether you need the extension or not? Leg inseam length?
And anyone know if that's even an option now that the S30 is out of production?
I used a custom 60mm extension on my first S30 and a 100mm extension on my first S1.0. In both cases it relieved recumbutt by getting the leading edge of my thighs off the seat and putting more weight on my back. In addition to that it brought my hands down considerably.