Chassis plates
So I was measuring the new chassis and the stock Serpent 4.0 chassis is the same width as the, no longer available, Avid chassis. The Serpent still has the milled areas, but the overal width is 82mm. This is quite a bit narrower than the 3.0 chassis as well. Just another thing to consider if you plan on converting a 3.0 to a 4.0.