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 How long does the installation take? When do I need a stair lift? What if something is in the way or on the track of the stair lift? How much weight can a stair lift hold?