How can we help you? Can I take the arms off of the stair lift to make the seat wider? 0 out of 1 found this helpful No, the arms are an integral part of the stair lift used for safety and support. We do offer heavy-duty stair lifts with a larger seat and higher weight capacity. Was this helpful? Yes (0) No (0) Category: General Related Questions Can you install a stair lift outside? How do I choose the right stair lift? What are the safety features on a stair lift? What if something is in the way or on the track of the stair lift?