What is the max/min rider height and weight?
Helix has been designed to accommodate riders between 5' to 6'4" and carry up to 250 lbs (113 kg). There is a large range of adjustability possible to achieve the desired fit.
With the current spec, the saddle height can be raised or lowered to accommodate a 5' - 6'4" rider. The seatpost also has a 40mm setback and a 60mm forward position. The stem has a 20mm rise that can be flipped to achieve a 20mm drop.
If any of these adjustments are not enough, it is always possible to replace the stem, seatpost, handlebar and crankset to achieve a better fit. The seatpost dimensions are 28.6mm x 430mm and the steerer tube diameter is 28.6mm.